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Drupal\Component\Utility\Unicode::validateUtf8(NULL) (Line: 65) Drupal\Component\Utility\Xss::filter(NULL) (Line: 351) _colorbox_formatter_get_caption(Array) (Line: 140) template_preprocess_colorbox_formatter(Array, 'colorbox_formatter', Array) call_user_func_array('template_preprocess_colorbox_formatter', Array) (Line: 261) Drupal\Core\Theme\ThemeManager->render('colorbox_formatter', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 250) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->{closure}() (Line: 1881) Twig\Extension\CoreExtension::captureOutput(Object) (Line: 40) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/fields/field.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array) (Line: 504) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 41) __TwigTemplate_0c51b0c178cb5a13267b2425c05b1ebb->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/embed/media--media-library.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('media', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array) (Line: 504) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 224) Drupal\entity_embed\Plugin\Filter\EntityEmbedFilter->Drupal\entity_embed\Plugin\Filter\{closure}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 223) Drupal\entity_embed\Plugin\Filter\EntityEmbedFilter->process('Data Click on the link to access each data set. If you wish to use these data sets, please email Gary Lovett, <a href="mailto:lovettg@caryinstitute.org">lovettg@caryinstitute.org</a> with a brief explanation of how you intend to use them. <strong>Data set</strong> <strong>Start date</strong> <strong>Method</strong> Gypsy moth egg mass density <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="407d05fd-ee81-40fc-8c76-a8633b7f1715" href="/media/208">metadata</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="1c2eb2c8-4a72-40a5-9667-6d833bf5712c" href="/media/209">data .xls </a> 1980 direct counts on sample plots <strong>Nutrient Cycling</strong> <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="d09119f2-a75c-424d-ac4e-ff76f9a298d7" href="/node/241">Wet deposition</a> 1984 wet-only collectors <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="d09119f2-a75c-424d-ac4e-ff76f9a298d7" href="/node/241">Dry deposition</a> 1988 filter packs + deposition velocity model Throughfall <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="85061985-4918-49b3-80d4-7ae9bdde59f4" href="/media/216">metadata .pdf </a><a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="789bfb48-d569-4c8c-a0ee-4d23eb5d062f" href="/media/215">data .xls</a> 1993 (through 1999) funnel/bottle collectors B horizon soil solution <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="22acb259-d662-43fe-96aa-83370c9691ed" href="/media/212">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="e5e75ea3-f69e-426f-b975-01dc180faa77" href="/media/217">data .xls</a> 1993 constant tension lysimeters Potential N mineralization <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="9241db15-c4f2-4008-a1de-de3239cad4a8" href="/media/214">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="af7722d4-fa00-40e3-9328-39bc1b16241b" href="/media/213">data .xls</a> 1994 laboratory incubation Foliar N concentration <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="28df51d3-a365-4146-a29b-7aba763908b0" href="/media/211">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="dcf23847-1ea9-4155-86cd-b257f5a4d1ac" href="/media/210">data .xls</a> 1994 C-N analyzer Julie Hart collecting soil solution using a suction lysimeter. Trends in Nitrogen and Sulfur Deposition We have observed a decline in total (wet + dry) atmospheric deposition of both nitrogen (N) and sulfur (S) since we began measurements in 1988 (Kelly et al 2002). There have been corresponding declines in fluxes of N and S in throughfall and of S in soil leachate (see graphs below). The fact that S leaching is substantially higher than S deposition suggests that mineral weathering contributes S to this ecosystem. There is minimal leaching of N, suggesting almost complete retention of N under current deposition conditions. With addition of nitrogen through experimental fertilization, nitrate leaching is accelerated, the soils become acidified, and tree mortality increases (Wallace et al. 2007). <ul> <li>Wallace, Z.P., G.M. Lovett, J.E. Hart, and B. Machona. 2007. <a href="http://caryinstitute.org/reprints/Wallace_2007_ForEcolMgt.pdf">Effects of nitrogen saturation on tree growth and death in a mixed-oak forest</a>. Forest Ecology and Management 243:210-218.</li> <li>Lovett, G. M. and J. E. Hart. 2005.<a href="http://caryinstitute.org/reprints/Lovett_%202005_NYSERDA.pdf"> Monitoring the Deposition and Effects of Air Pollution in the Hudson Valley, NY</a>. New York State Energy Research and Development Authority Report 05-01. NYSERDA, Albany, NY. 27 pp.</li> <li>Kelly, V.R., G.M. Lovett, K.C. Weathers and G.E Likens. 2002. Trends in atmospheric concentration and deposition compared to regional and local pollutant emissions at a rural site in southeastern New York, USA. Atmospheric Environment 36:1569-1575.</li> </ul> ', 'en') (Line: 118) Drupal\filter\Element\ProcessedText::preRenderText(Array) call_user_func_array(Array, Array) (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 870) Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 432) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 250) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->{closure}() (Line: 1881) Twig\Extension\CoreExtension::captureOutput(Object) (Line: 40) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/fields/field.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 232) __TwigTemplate_abc59c813cbc839fddbb1f4d699981bc->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/nodes/node--project.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array, ) (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231) Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) call_user_func(Array, Object, 'kernel.view', Object) (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53) Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191) Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128) Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82) Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 50) Drupal\ban\BanMiddleware->handle(Object, 1, 1) (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741) Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in Drupal\Component\Utility\Xss::filter() (line 69 of core/lib/Drupal/Component/Utility/Xss.php).
Drupal\Component\Utility\Xss::filter(NULL) (Line: 351) _colorbox_formatter_get_caption(Array) (Line: 140) template_preprocess_colorbox_formatter(Array, 'colorbox_formatter', Array) call_user_func_array('template_preprocess_colorbox_formatter', Array) (Line: 261) Drupal\Core\Theme\ThemeManager->render('colorbox_formatter', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 250) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->{closure}() (Line: 1881) Twig\Extension\CoreExtension::captureOutput(Object) (Line: 40) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/fields/field.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array) (Line: 504) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 41) __TwigTemplate_0c51b0c178cb5a13267b2425c05b1ebb->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/embed/media--media-library.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('media', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array) (Line: 504) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 224) Drupal\entity_embed\Plugin\Filter\EntityEmbedFilter->Drupal\entity_embed\Plugin\Filter\{closure}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 223) Drupal\entity_embed\Plugin\Filter\EntityEmbedFilter->process('Data Click on the link to access each data set. If you wish to use these data sets, please email Gary Lovett, <a href="mailto:lovettg@caryinstitute.org">lovettg@caryinstitute.org</a> with a brief explanation of how you intend to use them. <strong>Data set</strong> <strong>Start date</strong> <strong>Method</strong> Gypsy moth egg mass density <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="407d05fd-ee81-40fc-8c76-a8633b7f1715" href="/media/208">metadata</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="1c2eb2c8-4a72-40a5-9667-6d833bf5712c" href="/media/209">data .xls </a> 1980 direct counts on sample plots <strong>Nutrient Cycling</strong> <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="d09119f2-a75c-424d-ac4e-ff76f9a298d7" href="/node/241">Wet deposition</a> 1984 wet-only collectors <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="d09119f2-a75c-424d-ac4e-ff76f9a298d7" href="/node/241">Dry deposition</a> 1988 filter packs + deposition velocity model Throughfall <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="85061985-4918-49b3-80d4-7ae9bdde59f4" href="/media/216">metadata .pdf </a><a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="789bfb48-d569-4c8c-a0ee-4d23eb5d062f" href="/media/215">data .xls</a> 1993 (through 1999) funnel/bottle collectors B horizon soil solution <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="22acb259-d662-43fe-96aa-83370c9691ed" href="/media/212">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="e5e75ea3-f69e-426f-b975-01dc180faa77" href="/media/217">data .xls</a> 1993 constant tension lysimeters Potential N mineralization <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="9241db15-c4f2-4008-a1de-de3239cad4a8" href="/media/214">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="af7722d4-fa00-40e3-9328-39bc1b16241b" href="/media/213">data .xls</a> 1994 laboratory incubation Foliar N concentration <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="28df51d3-a365-4146-a29b-7aba763908b0" href="/media/211">metadata .pdf</a> <a data-entity-substitution="media" data-entity-type="media" data-entity-uuid="dcf23847-1ea9-4155-86cd-b257f5a4d1ac" href="/media/210">data .xls</a> 1994 C-N analyzer Julie Hart collecting soil solution using a suction lysimeter. Trends in Nitrogen and Sulfur Deposition We have observed a decline in total (wet + dry) atmospheric deposition of both nitrogen (N) and sulfur (S) since we began measurements in 1988 (Kelly et al 2002). There have been corresponding declines in fluxes of N and S in throughfall and of S in soil leachate (see graphs below). The fact that S leaching is substantially higher than S deposition suggests that mineral weathering contributes S to this ecosystem. There is minimal leaching of N, suggesting almost complete retention of N under current deposition conditions. With addition of nitrogen through experimental fertilization, nitrate leaching is accelerated, the soils become acidified, and tree mortality increases (Wallace et al. 2007). <ul> <li>Wallace, Z.P., G.M. Lovett, J.E. Hart, and B. Machona. 2007. <a href="http://caryinstitute.org/reprints/Wallace_2007_ForEcolMgt.pdf">Effects of nitrogen saturation on tree growth and death in a mixed-oak forest</a>. Forest Ecology and Management 243:210-218.</li> <li>Lovett, G. M. and J. E. Hart. 2005.<a href="http://caryinstitute.org/reprints/Lovett_%202005_NYSERDA.pdf"> Monitoring the Deposition and Effects of Air Pollution in the Hudson Valley, NY</a>. New York State Energy Research and Development Authority Report 05-01. NYSERDA, Albany, NY. 27 pp.</li> <li>Kelly, V.R., G.M. Lovett, K.C. Weathers and G.E Likens. 2002. Trends in atmospheric concentration and deposition compared to regional and local pollutant emissions at a rural site in southeastern New York, USA. Atmospheric Environment 36:1569-1575.</li> </ul> ', 'en') (Line: 118) Drupal\filter\Element\ProcessedText::preRenderText(Array) call_user_func_array(Array, Array) (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 870) Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 432) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 250) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->{closure}() (Line: 1881) Twig\Extension\CoreExtension::captureOutput(Object) (Line: 40) __TwigTemplate_273072a643fb1f8506fbeb733eb7d745->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/fields/field.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array) (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 232) __TwigTemplate_abc59c813cbc839fddbb1f4d699981bc->doDisplay(Array, Array) (Line: 360) Twig\Template->yield(Array) (Line: 335) Twig\Template->render(Array) (Line: 38) Twig\TemplateWrapper->render(Array) (Line: 33) twig_render_template('themes/custom/cary/templates/nodes/node--project.html.twig', Array) (Line: 348) Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 491) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248) Drupal\Core\Render\Renderer->render(Array, ) (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231) Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) call_user_func(Array, Object, 'kernel.view', Object) (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53) Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191) Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128) Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82) Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 50) Drupal\ban\BanMiddleware->handle(Object, 1, 1) (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741) Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
Data
Click on the link to access each data set. If you wish to use these data sets, please email Gary Lovett, lovettg@caryinstitute.org with a brief explanation of how you intend to use them.
Data set | Start date | Method |
Gypsy moth egg mass density metadatadata .xls | 1980 | direct counts on sample plots |
Nutrient Cycling | ||
Wet deposition | 1984 | wet-only collectors |
Dry deposition | 1988 | filter packs + deposition velocity model |
Throughfall metadata .pdf data .xls | 1993 (through 1999) | funnel/bottle collectors |
B horizon soil solution metadata .pdfdata .xls | 1993 | constant tension lysimeters |
Potential N mineralization metadata .pdfdata .xls | 1994 | laboratory incubation |
Foliar N concentration metadata .pdfdata .xls | 1994 | C-N analyzer |
Trends in Nitrogen and Sulfur Deposition
We have observed a decline in total (wet + dry) atmospheric deposition of both nitrogen (N) and sulfur (S) since we began measurements in 1988 (Kelly et al 2002). There have been corresponding declines in fluxes of N and S in throughfall and of S in soil leachate (see graphs below). The fact that S leaching is substantially higher than S deposition suggests that mineral weathering contributes S to this ecosystem. There is minimal leaching of N, suggesting almost complete retention of N under current deposition conditions. With addition of nitrogen through experimental fertilization, nitrate leaching is accelerated, the soils become acidified, and tree mortality increases (Wallace et al. 2007).
- Wallace, Z.P., G.M. Lovett, J.E. Hart, and B. Machona. 2007. Effects of nitrogen saturation on tree growth and death in a mixed-oak forest. Forest Ecology and Management 243:210-218.
- Lovett, G. M. and J. E. Hart. 2005. Monitoring the Deposition and Effects of Air Pollution in the Hudson Valley, NY. New York State Energy Research and Development Authority Report 05-01. NYSERDA, Albany, NY. 27 pp.
- Kelly, V.R., G.M. Lovett, K.C. Weathers and G.E Likens. 2002. Trends in atmospheric concentration and deposition compared to regional and local pollutant emissions at a rural site in southeastern New York, USA. Atmospheric Environment 36:1569-1575.