2009 LTER All Scientists Meeting - Invertebrate Biology

New Phenology Research at the H.J. Andrews Experimental Forest

Sherri Johnson — Tue, 08 Sep 2009 16:26:56 +0000

Poster Number:

387

Presenter/Primary Author:

Sherri Johnson

Co-Authors:

Mark Schulze

Co-Authors:

Matt Betts

Co-Authors:

Judy Li

Co-Authors:

Sarah Frey

Co-Authors:

Jay Sexton

We are beginning new studies of phenology at the Andrews Forest to better understand influences of existing complex climatic gradients on timing of springtime life history events for multiple trophic levels. Phenological events are highly sensitive to temperature and climatic variations and are some of the most responsive indicators to climate change. By studying timing of events at multiple sites in a very heterogeneous climatic landscape, we expect to learn much about plant, insect and bird responses to current abiotic variability (i.e.

Dispersal of talitrid amphipods, Megalorchestia spp., on sandy beaches: implications for ecological recovery from disturbance

Jenifer Dugan — Mon, 17 Aug 2009 23:10:39 +0000

Poster Number:

220

Presenter/Primary Author:

Nicholas Schooler

Co-Authors:

Jenifer Dugan

Co-Authors:

H. Mark Page

Co-Authors:

David Hubbard

Dispersal ability can affect the dynamics and composition of intertidal communities. Sandy beach ecosystems, where several key taxa have limited dispersal, are increasingly impacted by growing coastal development, and human use, while facing additional habitat loss and fragmentation from sea level rise. Implications of low dispersal rates for populations of key beach taxa, such as talitrid amphipods, include susceptibility to local extinctions and potentially lengthy recolonization times relative to lifespans/generation times.

Student Poster:

Yes

Elevated Temperature Decouples Predator-Prey Interactions to Disrupt Grassland Trophic Cascade

Angela Laws — Tue, 14 Jul 2009 14:14:06 +0000

Poster Number:

146

Presenter/Primary Author:

Angela Laws

Co-Authors:

Anthony Joern

Understanding how biotic and abiotic factors combine to affect species interactions is an important challenge in ecology. Because the effects of biotic and abiotic factors on species interactions are often studied separately, it can be difficult to predict potential non-linear and indirect interactions among factors. We manipulated three key biotic and abiotic factors (temperature, food quality, predation) in field experiments in continental grassland using a plant – grasshopper – spider food chain.

Invertebrate impacts on ecosystem services under climate change

Chelse Prather — Wed, 01 Jul 2009 15:23:50 +0000

Final Report (Required, .pdf format only) :

Invertebrate impacts on ecosystem services under climate change_report.pdf

Organizer:

Chelse Prather

Co-organizer(s):

Angela Laws

Co-organizer(s):

Shannon Pelini

Invertebrates have known impacts on ecosystem services, and these impacts are likely to change as invertebrates respond to climate change. In this workshop, we aim to use the breadth of knowledge and diversity of sites in the LTER network to conceptualize the impacts that invertebrates have on ecosystem services, and how these may be altered by climate change. Invertebrates impact ecosystem services both directly (e.g. pollination, pest and disease control, water pollution, decomposition, and recreation) and indirectly through their consumption of primary producers (e.g.

Preferred Dates:

Sept. 15

Working Group Duration:

Session Info

Session(s):

Working Group Session 4

Room:

East Side Deer Ridge Fireside

Working Group Materials

Related materiels:

Ecosystem Services which invertebrates could impact.doc

Discussion_questions.doc

Final report from ASM working group.doc

Invertebrate Ecosystem Services and Climate Change_Compiled notes from workshop 9-15-09.doc

Official Participants

LTER Participants:

Russell Dennis

John Kominoski

Chelse Prather

Angela Laws

Shannon Pelini

Sydne Record

Jessica Woltz

Kyle Wickings

Nikhil Jaikumar

Sheena Parsons

John Blair

Christopher Bloch

Emily Rivest

Samantha Davis

Xueying Han

Timothy Seastedt

Nicholas Schooler

Jenifer Dugan

Scott Newbold

Additional Participants:

Margaret Kosmala-kosmala@umn.edu

Chuan Kai Ho - chuanho@tamug.edu

Israel Del Toro - israedt@gmail.com

Tracy Smith - tracy@nrel.colostate.edu

Yanmei Xiong - yanmei.xiong@colorado.edu

Unexpected effects of invertebrate consumers in the understory of a rainforest

Chelse Prather — Wed, 01 Jul 2009 14:59:50 +0000

Poster Number:

Presenter/Primary Author:

Chelse Prather

Co-Authors:

Gary E. Belovsky

In temperate systems, invertebrate consumers have known impacts to ecosystem processes, but in tropical ecology, it is assumed that only plant and microbes affect these processes. This study investigated what impacts common folivores (walking sticks) and detritivores (litter snails) have on decomposition, nutrient cycling and primary productivity in the understory of the Luquillo rainforest (LUQ). To test these effects, we started an enclosure experiment with consumers both present and absent in 2005.

Student Poster:

Yes