<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div><div style="font-family:tahoma,sans-serif"><div><div><div><div><div><div><div><div><div><div><div><br><table cellspacing="0" cellpadding="0" width="100%" bgcolor="#474444" style="font-family:Arial,Helvetica,sans-serif"><tbody><tr><td style="font-size:0px;height:33px;line-height:0"></td></tr><tr><td valign="top"> <table cellspacing="0" cellpadding="0" width="600" align="center" border="0" style="width:600px;margin:0px auto"><tbody><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="44" style="height:44px"><th style="border-width:medium;border-style:none;border-color:initial;width:477px;vertical-align:middle;font-weight:normal;padding:10px 0px 0px 10px;text-align:left;background-color:rgb(66,176,91)"><p align="left" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(253,251,251);margin-top:0px;line-height:18px;background-color:transparent"><strong> <span>Seminario</span> <span>IFEVA</span></strong></p></th><th style="border-width:medium;border-style:none;border-color:initial;width:103px;vertical-align:middle;font-weight:normal;padding:0px 5px;text-align:left;background-color:transparent"><div style="padding:10px;text-align:right"><table cellspacing="0" cellpadding="0" border="0" style="display:inline-block"><tbody><tr><td style="padding-right:5px"><a href="https://twitter.com/ifevaok?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Eprofile%3Aifevaok&ref_url=http%3A%2F%2Fwww.ifeva.edu.ar%2Findex.tw.html" rel="noreferrer noreferrer" target="_blank"><img title="Twitter" alt="Twitter" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/478A2A14-0536-35C1-A7E4-6A014235947D_Image_1_9f1117f4-4654-4d62-878f-885c62b8fa59.png" width="24" style="border-width:medium;border-style:none;border-color:initial;display:block"></a></td><td style="padding-right:5px"><a href="https://www.youtube.com/channel/UCCC_QmqL9yuKBnZ6p4mnxBw" rel="noreferrer noreferrer" target="_blank"><img title="Youtube" alt="Youtube" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/8EF10070-9897-5A56-C849-AF5EF89AEA87_Image_2_e946f5fa-93af-4d25-972f-4211dca72430.png" width="24" style="border-width:medium;border-style:none;border-color:initial;display:block"></a></td><td><a href="https://www.instagram.com/ifevaok/" rel="noreferrer noreferrer" target="_blank"><img title="Instagram" alt="Instagram" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/371C7FF9-A40B-509F-8253-F6AC579686D2_Image_3_79b8ac76-96a9-425d-adfc-620fc1609bf9.png" width="24" style="border-width:medium;border-style:none;border-color:initial;display:block"></a></td></tr></tbody></table></div></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:580px;font-weight:normal;padding:0px 20px 0px 0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:580px"><tbody><tr height="92" style="height:92px"><th style="border-width:medium;border-style:none;border-color:initial;width:580px;vertical-align:middle;font-weight:normal;padding:0px;text-align:left;background-color:transparent"><table cellspacing="0" cellpadding="0" align="center" border="0" style="margin:0px auto"><tbody><tr><td align="center" style="padding:0px"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="border-width:medium;border-style:none;border-color:initial;background-color:transparent"><img alt="" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/152EFEE1-9961-67DB-42C9-BDFED3ECD20D_Image_4_2f0431fb-1968-435e-bed4-e7fa8fc21754.png" width="570" hspace="0" vspace="0" style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="76" style="height:76px"><th style="border-width:medium;border-style:none;border-color:initial;width:326px;vertical-align:middle;font-weight:normal;padding:10px 10px 0px 20px;text-align:left;background-color:rgb(243,54,62)"><p align="left" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(253,251,251);margin-top:0px;line-height:18px;background-color:transparent"><strong>JUEVES<br>28 DE NOVIEMBRE 2024<br>12:00 hs</strong></p></th><th style="border-width:medium;border-style:none;border-color:initial;width:244px;vertical-align:middle;font-weight:normal;padding:10px 0px 0px;text-align:left;background-color:rgb(108,108,108)"><p align="center" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(56,56,56);text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><a title="" href="https://www.youtube.com/channel/UCCC_QmqL9yuKBnZ6p4mnxBw" rel="noreferrer noreferrer" style="color:rgb(253,251,251);text-decoration-line:none" target="_blank">Presencial: SUM <strong><span>IFEVA</span></strong></a></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="121" style="height:121px"><th style="border-width:medium;border-style:none;border-color:initial;width:600px;vertical-align:middle;font-weight:normal;padding:0px;text-align:left;background-color:transparent"><table cellspacing="0" cellpadding="0" align="center" border="0" style="margin:0px auto"><tbody><tr><td align="center" style="padding:0px"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="border-width:medium;border-style:none;border-color:initial;background-color:transparent"><img alt="" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/A1D4E880-2191-4DD7-2282-E4EBD8D61287_Image_5_91564d99-8f65-4b8d-9d26-1320ac7ed277.jpg" width="600" hspace="0" vspace="0" style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:10px 0px 5px;text-align:left;background-color:rgb(253,251,251)"><table cellspacing="0" cellpadding="0" style="width:600px"><tbody><tr height="126" style="height:126px"><th style="border-width:medium;border-style:none;border-color:initial;width:54px;vertical-align:top;padding:10px 5px 5px;text-align:left;background-color:transparent"><span class="gmail_default" style="font-family:tahoma,sans-serif;font-weight:normal"></span><table cellspacing="0" cellpadding="0" border="0" style="margin:0px auto"><tbody><tr><td style="padding:0px;text-align:center"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="border-width:medium;border-style:none;border-color:initial;background-color:transparent"><img alt="" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/5A4A5834-3F9A-6A31-826B-CB9282750DB7_Image_6_f652f2ce-f80b-4f92-bd91-eb57b875ac83.png" width="18" hspace="0" vspace="0" style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th><th style="border-width:medium;border-style:none;border-color:initial;width:526px;vertical-align:top;padding:5px;text-align:left;background-color:transparent"><div style="background-color:rgb(255,255,255)"><p style="margin-bottom:0.28cm;line-height:14.04px;direction:ltr;background:transparent"><span lang="EN-US"><font size="6" color="#000000">Spatial aggregation, animal seed</font></span></p><p style="margin-bottom:0.28cm;line-height:14.04px;direction:ltr;background:transparent"><font color="#000000"><span lang="EN-US"><font size="6">dispersal and forest </font></span><span style="background-color:transparent"><span lang="EN-US"><font size="6">dynamics.</font></span></span></font></p><p style="margin-bottom:0.28cm;line-height:14.04px;direction:ltr;background:transparent"><br></p></div></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:5px 0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="564" style="height:564px"><th style="border-width:medium;border-style:none;border-color:initial;width:570px;vertical-align:top;padding:10px 15px;text-align:left"><p style="margin-bottom:1em;margin-top:0px;line-height:20px"><font size="4" face="arial, sans-serif"><span style="color:rgb(66,176,91);background-color:transparent">Autores: </span></font><font color="#000000"><span style="font-weight:normal">Thorsten Wiegand</span><sup style="font-weight:400;background-color:rgb(255,255,255)">1,2</sup><span style="font-weight:400;background-color:rgb(255,255,255)">, Xugao Wang</span></font><sup style="color:rgb(0,0,0);font-weight:400;background-color:rgb(255,255,255)">3</sup><span style="color:rgb(0,0,0);font-weight:400;background-color:rgb(255,255,255)">, and Andreas Huth</span><sup style="color:rgb(0,0,0);font-weight:400;background-color:rgb(255,255,255)">1,2</sup></p><p style="margin-bottom:1em;margin-top:0px;line-height:20px"><font style="background-color:transparent"><font size="4" style="background-color:transparent"><span style="color:rgb(66,176,91);font-family:Calibri,sans-serif">Filiación:</span></font></font><font color="#000000"><span style="font-weight:normal"> </span><sup style="background-color:rgb(255,255,255);font-weight:400"><span lang="EN-US" style="line-height:11.5917px">1</span></sup><span lang="EN-US" style="background-color:rgb(255,255,255);font-weight:400;line-height:13.91px">Dep. of Ecological Modelling, Helmholtz Centre for Environmental Research –UFZ </span></font></p><p style="margin-bottom:1em;margin-top:0px;line-height:20px"><font color="#000000"><sup style="background-color:rgb(255,255,255);font-weight:400"><span lang="EN-US" style="line-height:11.5917px">2 </span></sup><span style="background-color:rgb(255,255,255);font-weight:400">German Centre for Integrative Biodiversity Research (iDiv)</span></font></p><p class="MsoNormal" style="margin-bottom:0.0001pt;font-weight:400;background-color:rgb(255,255,255)"><font color="#000000">³Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology Chinese Academy of Sciences<span lang="EN-US">, Shenyang, China</span><b><span lang="EN-US" style="line-height:13.91px"><br></span></b></font></p><br><p style="margin-bottom:1em;margin-top:0px;line-height:20px"><font face="arial, sans-serif" size="4" style="background-color:transparent;font-weight:400;color:rgb(56,56,56)"><strong style="background-color:transparent;color:rgb(34,34,34)"><span style="color:rgb(66,176,91)">Resumen: </span></strong></font><font size="4" color="#000000"><span style="font-weight:400;background-color:rgb(255,255,255)">The search for simple principles underlying the spatial structure and dynamics of plant communities is a long-standing challenge in ecology. In particular, the relationship between species coexistence and the spatial distribution of plants is challenging to resolve in species-rich communities. Here we present a comprehensive analysis of the spatial patterns of 720 tree species in 21 large forest plots and its consequences for species coexistence. We find that species with low abundances tend to be more spatially aggregated than more abundant species, and a latitudinal gradient in the strength of this negative aggregation-abundance relationship that increases from tropical to temperate forests. We suggest, in line with recent work, that latitudinal gradients in animal seed dispersal11 and mycorrhizal associations may jointly generate this intriguing pattern. By integrating the observed spatial patterns into population models we derive the conditions under which species can invade from low abundances, in terms of spatial patterns, demography, niche overlap, and immigration. Evaluation of the spatial invasion condition for our 720 tree species suggests that temperate and tropical forests meet the invasion criterion to a similar extend, but through opposed strategies conditioned by their spatial patterns. Our approach opens up new avenues for integrating observed spatial patterns into ecological theory, and underscores the need to understand the interaction among spatial patterns at the neighbourhood scale and multiple ecological processes in greater detail</span><span style="font-weight:normal">.</span></font></p><div style="font-weight:400;background-color:rgb(255,255,255);font-family:tahoma,sans-serif"><p class="MsoNormal" style="margin:0cm 0cm 10pt;font-family:Calibri,sans-serif"><font face="arial, sans-serif" style="background-color:transparent;text-indent:1.25cm;color:rgb(56,56,56)"><strong style="background-color:transparent"><span style="color:rgb(66,176,91)"><font size="4">claves: </font></span></strong></font><span style="font-family:tahoma,sans-serif"><font size="4">Coexistence, ForestGEO megaplots, latitudinal gradients, seed dispersal, spatial pattern.</font></span><font size="4"><br></font></p></div></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:5px 0px;text-align:left;background-color:rgb(253,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="163" style="height:163px"><th style="border-width:medium;border-style:none;border-color:initial;width:140px;vertical-align:top;padding:5px;text-align:left;background-color:transparent"><img src="cid:ii_m3x60kk20" alt="ThorstenWiegand_b.jpg" width="163" height="218" style="outline:0px;margin-right:0px"><br></th><th style="border-width:medium;border-style:none;border-color:initial;width:440px;vertical-align:top;padding:5px;text-align:left"><div style="background-color:rgb(255,255,255);font-family:tahoma,sans-serif"><div style="font-family:Arial,Helvetica,sans-serif"><font color="#000000"><span style="background-color:rgb(250,250,250);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">Thorsten Wiegand <span style="font-weight:400">studied physics at the University Marburg where he completed his graduate work in theoretical ecology. In 1992 he started as Postdoc to the Department of Ecological Modelling at the UFZ in Leipzig, and in 1999 obtained his habilitation in Theoretical Ecology at the LMU Munich. Dr Wiegand is </span></span><span style="font-weight:400;background-color:rgb(250,250,250);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">a theoretical ecologist with more than 25 years research experience in question-driven research in biodiversity and conservation. He is working in close collaboration with field ecologists to conduct model-data integration and synthesis. His research centers broadly on spatial ecology and the investigation of the role of species interactions, spatial patterns and spatial processes for population and community dynamics, community assembly, and biodiversity. His</span><span style="font-weight:400;background-color:rgb(250,250,250);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"> primary research goals are to broaden the theory of population and community ecology and to integrate them with landscape ecology to encompass an explicit consideration of spatially distributed processes, and to develop methods to adapt individual-based simulation models optimally for ecological applications.</span></font></div></div><p style="margin-bottom:0.21cm;line-height:19.5px;direction:ltr"></p><p style="margin-bottom:0.21cm;line-height:19.5px;direction:ltr"></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(229,229,229)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="93" style="height:93px"><th style="border-width:medium;border-style:none;border-color:initial;width:570px;vertical-align:middle;padding:10px 10px 0px 20px;text-align:left;background-color:transparent"><span style="font-weight:normal">Certificados: </span><span style="background-color:transparent"><span style="font-weight:normal">los alumnos que necesiten certificar su asistencia, deberán enviar </span></span><span style="font-weight:normal;background-color:transparent;color:rgb(56,56,56);font-family:verdana,arial,helvetica,sans-serif">su nombre y DNI</span><span class="gmail_default" style="font-weight:normal;background-color:transparent;color:rgb(56,56,56);font-family:tahoma,sans-serif"> </span><span class="gmail_default" style="background-color:transparent;color:rgb(56,56,56);font-family:tahoma,sans-serif"><span style="font-weight:normal">al moderador (</span><a href="mailto:mtexeira@agro.uba.ar" rel="noreferrer noreferrer" style="font-weight:normal" target="_blank">mtexeira@agro.uba.ar</a><span style="font-weight:normal">) </span>durante el transcurso del <span>seminario</span> o dentro de la hora posterior a la finalización del mismo</span><span style="font-weight:normal;background-color:transparent;color:rgb(56,56,56);font-family:verdana,arial,helvetica,sans-serif">. </span><br></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(66,176,91)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="62" style="height:62px"><th style="border-width:medium;border-style:none;border-color:initial;width:560px;vertical-align:top;font-weight:normal;padding:25px 20px 10px;text-align:left;background-color:transparent"><p align="center" style="margin-bottom:1em;font-size:12px;font-family:tahoma,geneva,sans-serif;color:rgb(9,9,9);text-align:center;margin-top:0px;line-height:15px;background-color:transparent"><strong><span style="color:rgb(255,255,255)">Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura</span></strong></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:1px 0px;text-align:left;background-color:transparent"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="66" style="height:66px"><th style="border-width:medium;border-style:none;border-color:initial;width:590px;vertical-align:middle;font-weight:normal;padding:5px;text-align:left;background-color:transparent"><p align="center" style="margin-bottom:1em;font-size:12px;font-family:tahoma,geneva,sans-serif;color:rgb(253,251,251);text-align:center;margin-top:0px;line-height:15px;background-color:transparent"><br><span>IFEVA</span> - Facultad de Agronomía - Universidad de Buenos Aires<br> Av. San Martín 4453 - C1417DSE - Buenos Aires - Argentina</p></th></tr></tbody></table></th></tr></tbody></table></td></tr><tr><td style="font-size:0px;height:8px;line-height:0"> </td></tr></tbody></table></div></div></div></div></div></div></div></div></div></div></div></div><div>--<br></div></div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Marcos Texeira<br>Departamento de Métodos Cuantitativos y Sistemas de Información //  <br>LART - IFEVA - CONICET<br>(011) 52870829</div><div>Facultad de Agronomía<br>Universidad de Buenos Aires</div><div><span>Av. San Martín 4453 (C1417DSE)<br></span></div></div></div></div>
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