際際滷shows by User: amellison17 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: amellison17 / Tue, 29 Dec 2020 13:39:18 GMT 際際滷Share feed for 際際滷shows by User: amellison17 Forests are much more than trees: Testing for broader effects of foundation species in large forest dynamic plots /slideshow/forests-are-much-more-than-trees-testing-for-broader-effects-of-foundation-species-in-large-forest-dynamic-plots-240678865/240678865 ame-2020-cforbioforum-201229133918
A foundation species is a species (or group of functionally similar taxa) that dominates an assemblage numerically and in overall size (usually mass), determines the diversity of associated taxa through non-trophic interactions, and modulates fluxes of nutrients and energy at multiple control points in the ecosystem it defines. Recent advances in statistical methodology based on decades of observational and experimental work have identified two fingerprints of candidate foundation species in large forest dynamics plots: (1) they would be outliers from the expected reverse-J size-frequency distribution; and (2) their size or abundance would be negatively associated with the total abundance, alpha diversity of associated woody species at local spatial scales but positively associated with local-to-regional scale species turnover (beta diversity). The negative association between foundation species size or abundance and alpha diversity of associated woody species most likely results simply from crowding: at the local scale (e.g., in a 2020-m subplot), when a foundation species dominates the basal area there is simply less room for any other stems. But foundation species also can enhance alpha diversity of other associated taxa, including microbes, invertebrate and vertebrate animals, and non-woody plant species. In this talk, I lay out a framework and sampling design for investigating effects of foundation species on other associated species. I then present initial data from a study that used these methods to investigate the relationship between the foundation tree species Tsuga candensis and diversity of associated ground-nesting ants in the ForestGEO plot at the Harvard Forest. These methods could be employed in any large forest dynamics plot to provide valuable new data on the importance of foundation species in controlling biodiversity at multiple scales. However, manipulative experiments remain the "gold standard" for testing the hypothesis that a candidate foundation species is, indeed, a foundation species.]]>
A foundation species is a species (or group of functionally similar taxa) that dominates an assemblage numerically and in overall size (usually mass), determines the diversity of associated taxa through non-trophic interactions, and modulates fluxes of nutrients and energy at multiple control points in the ecosystem it defines. Recent advances in statistical methodology based on decades of observational and experimental work have identified two fingerprints of candidate foundation species in large forest dynamics plots: (1) they would be outliers from the expected reverse-J size-frequency distribution; and (2) their size or abundance would be negatively associated with the total abundance, alpha diversity of associated woody species at local spatial scales but positively associated with local-to-regional scale species turnover (beta diversity). The negative association between foundation species size or abundance and alpha diversity of associated woody species most likely results simply from crowding: at the local scale (e.g., in a 2020-m subplot), when a foundation species dominates the basal area there is simply less room for any other stems. But foundation species also can enhance alpha diversity of other associated taxa, including microbes, invertebrate and vertebrate animals, and non-woody plant species. In this talk, I lay out a framework and sampling design for investigating effects of foundation species on other associated species. I then present initial data from a study that used these methods to investigate the relationship between the foundation tree species Tsuga candensis and diversity of associated ground-nesting ants in the ForestGEO plot at the Harvard Forest. These methods could be employed in any large forest dynamics plot to provide valuable new data on the importance of foundation species in controlling biodiversity at multiple scales. However, manipulative experiments remain the "gold standard" for testing the hypothesis that a candidate foundation species is, indeed, a foundation species.]]> Tue, 29 Dec 2020 13:39:18 GMT /slideshow/forests-are-much-more-than-trees-testing-for-broader-effects-of-foundation-species-in-large-forest-dynamic-plots-240678865/240678865 amellison17@slideshare.net(amellison17) Forests are much more than trees: Testing for broader effects of foundation species in large forest dynamic plots amellison17 A foundation species is a species (or group of functionally similar taxa) that dominates an assemblage numerically and in overall size (usually mass), determines the diversity of associated taxa through non-trophic interactions, and modulates fluxes of nutrients and energy at multiple control points in the ecosystem it defines. Recent advances in statistical methodology based on decades of observational and experimental work have identified two fingerprints of candidate foundation species in large forest dynamics plots: (1) they would be outliers from the expected reverse-J size-frequency distribution; and (2) their size or abundance would be negatively associated with the total abundance, alpha diversity of associated woody species at local spatial scales but positively associated with local-to-regional scale species turnover (beta diversity). The negative association between foundation species size or abundance and alpha diversity of associated woody species most likely results simply from crowding: at the local scale (e.g., in a 2020-m subplot), when a foundation species dominates the basal area there is simply less room for any other stems. But foundation species also can enhance alpha diversity of other associated taxa, including microbes, invertebrate and vertebrate animals, and non-woody plant species. In this talk, I lay out a framework and sampling design for investigating effects of foundation species on other associated species. I then present initial data from a study that used these methods to investigate the relationship between the foundation tree species Tsuga candensis and diversity of associated ground-nesting ants in the ForestGEO plot at the Harvard Forest. These methods could be employed in any large forest dynamics plot to provide valuable new data on the importance of foundation species in controlling biodiversity at multiple scales. However, manipulative experiments remain the "gold standard" for testing the hypothesis that a candidate foundation species is, indeed, a foundation species. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ame-2020-cforbioforum-201229133918-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> A foundation species is a species (or group of functionally similar taxa) that dominates an assemblage numerically and in overall size (usually mass), determines the diversity of associated taxa through non-trophic interactions, and modulates fluxes of nutrients and energy at multiple control points in the ecosystem it defines. Recent advances in statistical methodology based on decades of observational and experimental work have identified two fingerprints of candidate foundation species in large forest dynamics plots: (1) they would be outliers from the expected reverse-J size-frequency distribution; and (2) their size or abundance would be negatively associated with the total abundance, alpha diversity of associated woody species at local spatial scales but positively associated with local-to-regional scale species turnover (beta diversity). The negative association between foundation species size or abundance and alpha diversity of associated woody species most likely results simply from crowding: at the local scale (e.g., in a 2020-m subplot), when a foundation species dominates the basal area there is simply less room for any other stems. But foundation species also can enhance alpha diversity of other associated taxa, including microbes, invertebrate and vertebrate animals, and non-woody plant species. In this talk, I lay out a framework and sampling design for investigating effects of foundation species on other associated species. I then present initial data from a study that used these methods to investigate the relationship between the foundation tree species Tsuga candensis and diversity of associated ground-nesting ants in the ForestGEO plot at the Harvard Forest. These methods could be employed in any large forest dynamics plot to provide valuable new data on the importance of foundation species in controlling biodiversity at multiple scales. However, manipulative experiments remain the &quot;gold standard&quot; for testing the hypothesis that a candidate foundation species is, indeed, a foundation species.
Forests are much more than trees: Testing for broader effects of foundation species in large forest dynamic plots from amellison17
]]> 104 0 https://cdn.slidesharecdn.com/ss_thumbnails/ame-2020-cforbioforum-201229133918-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 "We have met the enemy and he is us": Professional, social, and financial costs of sharing data /amellison17/we-have-met-the-enemy-and-he-is-us-professional-social-and-financial-costs-of-sharing-data ellison-wehavemettheenemy-180813181126
In the early 1990s, ecologists asserted the value of unrestricted sharing of data and incentivized their documentation, archiving, and distribution. Twenty-five years on, we know that open data increases impacts of papers and spurs synthesis, and technical barriers to data sharing have largely disappeared. But social barriers still limit attainment of a truly "open ecology". These barriers include: fears of being "scooped;" concerns for resources required to organize data; a lack of a widely-accepted system for citing them and crediting their authors; and inequities in their distribution and use. In short, the enemy of open data is us. ]]>
In the early 1990s, ecologists asserted the value of unrestricted sharing of data and incentivized their documentation, archiving, and distribution. Twenty-five years on, we know that open data increases impacts of papers and spurs synthesis, and technical barriers to data sharing have largely disappeared. But social barriers still limit attainment of a truly "open ecology". These barriers include: fears of being "scooped;" concerns for resources required to organize data; a lack of a widely-accepted system for citing them and crediting their authors; and inequities in their distribution and use. In short, the enemy of open data is us. ]]> Mon, 13 Aug 2018 18:11:26 GMT /amellison17/we-have-met-the-enemy-and-he-is-us-professional-social-and-financial-costs-of-sharing-data amellison17@slideshare.net(amellison17) "We have met the enemy and he is us": Professional, social, and financial costs of sharing data amellison17 In the early 1990s, ecologists asserted the value of unrestricted sharing of data and incentivized their documentation, archiving, and distribution. Twenty-five years on, we know that open data increases impacts of papers and spurs synthesis, and technical barriers to data sharing have largely disappeared. But social barriers still limit attainment of a truly "open ecology". These barriers include: fears of being "scooped;" concerns for resources required to organize data; a lack of a widely-accepted system for citing them and crediting their authors; and inequities in their distribution and use. In short, the enemy of open data is us. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ellison-wehavemettheenemy-180813181126-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> In the early 1990s, ecologists asserted the value of unrestricted sharing of data and incentivized their documentation, archiving, and distribution. Twenty-five years on, we know that open data increases impacts of papers and spurs synthesis, and technical barriers to data sharing have largely disappeared. But social barriers still limit attainment of a truly &quot;open ecology&quot;. These barriers include: fears of being &quot;scooped;&quot; concerns for resources required to organize data; a lack of a widely-accepted system for citing them and crediting their authors; and inequities in their distribution and use. In short, the enemy of open data is us.
"We have met the enemy and he is us": Professional, social, and financial costs of sharing data from amellison17
]]> 243 6 https://cdn.slidesharecdn.com/ss_thumbnails/ellison-wehavemettheenemy-180813181126-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Hemlock Hospice - ESA 2017 Ignite talk /slideshow/hemlock-hospice-esa-2017-ignite-talk/79493215 hh-esa-2017-170906162210
Preview of the Hemlock Hospice art/science/sculpture installation and exhibition at Harvard Forest. Presented at the 2017 Ecological Society of America annual meeting (5-minute ignite [pecha kucha] talk).]]>
Preview of the Hemlock Hospice art/science/sculpture installation and exhibition at Harvard Forest. Presented at the 2017 Ecological Society of America annual meeting (5-minute ignite [pecha kucha] talk).]]> Wed, 06 Sep 2017 16:22:10 GMT /slideshow/hemlock-hospice-esa-2017-ignite-talk/79493215 amellison17@slideshare.net(amellison17) Hemlock Hospice - ESA 2017 Ignite talk amellison17 Preview of the Hemlock Hospice art/science/sculpture installation and exhibition at Harvard Forest. Presented at the 2017 Ecological Society of America annual meeting (5-minute ignite [pecha kucha] talk). <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/hh-esa-2017-170906162210-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Preview of the Hemlock Hospice art/science/sculpture installation and exhibition at Harvard Forest. Presented at the 2017 Ecological Society of America annual meeting (5-minute ignite [pecha kucha] talk).
Hemlock Hospice - ESA 2017 Ignite talk from amellison17
]]> 164 5 https://cdn.slidesharecdn.com/ss_thumbnails/hh-esa-2017-170906162210-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Using large forest plots and codispersion analysis to identify foundation tree species before they disappear /slideshow/using-large-forest-plots-and-codispersion-analysis-to-identify-foundation-tree-species-before-they-disappear/79488445 foundationforestspecies-brazil-2017-170906140057
A discussion of new statistical methods to help identify foundation tree species from large forest dynamics plots, including published and ongoing research. Topics include: spatial analysis, co-occurrence, biodiversity, species-environment relationships ]]>
A discussion of new statistical methods to help identify foundation tree species from large forest dynamics plots, including published and ongoing research. Topics include: spatial analysis, co-occurrence, biodiversity, species-environment relationships ]]> Wed, 06 Sep 2017 14:00:57 GMT /slideshow/using-large-forest-plots-and-codispersion-analysis-to-identify-foundation-tree-species-before-they-disappear/79488445 amellison17@slideshare.net(amellison17) Using large forest plots and codispersion analysis to identify foundation tree species before they disappear amellison17 A discussion of new statistical methods to help identify foundation tree species from large forest dynamics plots, including published and ongoing research. Topics include: spatial analysis, co-occurrence, biodiversity, species-environment relationships <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/foundationforestspecies-brazil-2017-170906140057-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> A discussion of new statistical methods to help identify foundation tree species from large forest dynamics plots, including published and ongoing research. Topics include: spatial analysis, co-occurrence, biodiversity, species-environment relationships
Using large forest plots and codispersion analysis to identify foundation tree species before they disappear from amellison17
]]> 241 3 https://cdn.slidesharecdn.com/ss_thumbnails/foundationforestspecies-brazil-2017-170906140057-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Things fall apart /slideshow/things-fall-apart-66636461/66636461 thingsfallapart-short-hf-intro-161002043408
Presentation of the fall and rise and fall again of eastern hemlock, a foundation tree species of eastern North American forests. Testing the hypothesis that it is a foundation species, modeling its future given climate change scenarios, and validating model results with eddy covariance data]]>
Presentation of the fall and rise and fall again of eastern hemlock, a foundation tree species of eastern North American forests. Testing the hypothesis that it is a foundation species, modeling its future given climate change scenarios, and validating model results with eddy covariance data]]> Sun, 02 Oct 2016 04:34:08 GMT /slideshow/things-fall-apart-66636461/66636461 amellison17@slideshare.net(amellison17) Things fall apart amellison17 Presentation of the fall and rise and fall again of eastern hemlock, a foundation tree species of eastern North American forests. Testing the hypothesis that it is a foundation species, modeling its future given climate change scenarios, and validating model results with eddy covariance data <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/thingsfallapart-short-hf-intro-161002043408-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Presentation of the fall and rise and fall again of eastern hemlock, a foundation tree species of eastern North American forests. Testing the hypothesis that it is a foundation species, modeling its future given climate change scenarios, and validating model results with eddy covariance data
Things fall apart from amellison17
]]> 221 4 https://cdn.slidesharecdn.com/ss_thumbnails/thingsfallapart-short-hf-intro-161002043408-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Thoughts about academic publishing /slideshow/thoughts-about-academic-publishing-66636107/66636107 thoughtsaboutacademicpublishing-161002034857
際際滷s from a workshop on scientific publishing and scientific communication presented at various institutes of the Chinese Academy of Sciences, August - September 2016]]>
際際滷s from a workshop on scientific publishing and scientific communication presented at various institutes of the Chinese Academy of Sciences, August - September 2016]]> Sun, 02 Oct 2016 03:48:56 GMT /slideshow/thoughts-about-academic-publishing-66636107/66636107 amellison17@slideshare.net(amellison17) Thoughts about academic publishing amellison17 際際滷s from a workshop on scientific publishing and scientific communication presented at various institutes of the Chinese Academy of Sciences, August - September 2016 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/thoughtsaboutacademicpublishing-161002034857-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> 際際滷s from a workshop on scientific publishing and scientific communication presented at various institutes of the Chinese Academy of Sciences, August - September 2016
Thoughts about academic publishing from amellison17
]]> 286 6 https://cdn.slidesharecdn.com/ss_thumbnails/thoughtsaboutacademicpublishing-161002034857-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Regime shift uppsala 20151130 forslideshare /slideshow/regime-shift-uppsala-20151130-forslideshare/55638157 regimeshiftuppsala20151130-forslideshare-151130050826-lva1-app6892
Seminar given at the Linnean Center for Plant Biology, Uppsala, Sweden, 30 November 2015]]>
Seminar given at the Linnean Center for Plant Biology, Uppsala, Sweden, 30 November 2015]]> Mon, 30 Nov 2015 05:08:26 GMT /slideshow/regime-shift-uppsala-20151130-forslideshare/55638157 amellison17@slideshare.net(amellison17) Regime shift uppsala 20151130 forslideshare amellison17 Seminar given at the Linnean Center for Plant Biology, Uppsala, Sweden, 30 November 2015 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/regimeshiftuppsala20151130-forslideshare-151130050826-lva1-app6892-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Seminar given at the Linnean Center for Plant Biology, Uppsala, Sweden, 30 November 2015
Regime shift uppsala 20151130 forslideshare from amellison17
]]> 448 6 https://cdn.slidesharecdn.com/ss_thumbnails/regimeshiftuppsala20151130-forslideshare-151130050826-lva1-app6892-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Ellison keynote - aaas workshop 2015 /amellison17/ellison-keynote-aaas-workshop-2015-48008579 ellison-keynote-aaasworkshop2015-150511174532-lva1-app6892
Keynote talk on reproducibility and replication of data analysis for AAAS workshop on "Reproduciblity in the Field Sciences", May 11-12, 2015, Washington, DC]]>
Keynote talk on reproducibility and replication of data analysis for AAAS workshop on "Reproduciblity in the Field Sciences", May 11-12, 2015, Washington, DC]]> Mon, 11 May 2015 17:45:32 GMT /amellison17/ellison-keynote-aaas-workshop-2015-48008579 amellison17@slideshare.net(amellison17) Ellison keynote - aaas workshop 2015 amellison17 Keynote talk on reproducibility and replication of data analysis for AAAS workshop on "Reproduciblity in the Field Sciences", May 11-12, 2015, Washington, DC <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ellison-keynote-aaasworkshop2015-150511174532-lva1-app6892-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Keynote talk on reproducibility and replication of data analysis for AAAS workshop on &quot;Reproduciblity in the Field Sciences&quot;, May 11-12, 2015, Washington, DC
Ellison keynote - aaas workshop 2015 from amellison17
]]> 351 3 https://cdn.slidesharecdn.com/ss_thumbnails/ellison-keynote-aaasworkshop2015-150511174532-lva1-app6892-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 https://public.slidesharecdn.com/v2/images/profile-picture.png https://cdn.slidesharecdn.com/ss_thumbnails/ame-2020-cforbioforum-201229133918-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/forests-are-much-more-than-trees-testing-for-broader-effects-of-foundation-species-in-large-forest-dynamic-plots-240678865/240678865 Forests are much more ... https://cdn.slidesharecdn.com/ss_thumbnails/ellison-wehavemettheenemy-180813181126-thumbnail.jpg?width=320&height=320&fit=bounds amellison17/we-have-met-the-enemy-and-he-is-us-professional-social-and-financial-costs-of-sharing-data &quot;We have met the enemy... https://cdn.slidesharecdn.com/ss_thumbnails/hh-esa-2017-170906162210-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/hemlock-hospice-esa-2017-ignite-talk/79493215 Hemlock Hospice - ESA ...