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Life Sciences Commons

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Marine Biology

William & Mary

VIMS Articles

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Climate

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Full-Text Articles in Life Sciences

A Pleistocene Legacy Structures Variation In Modern Seagrass Ecosystems, J. Emmett Duffy, John J. Stachowicz, (...), Robert J. Orth, J. Paul Richadson, Et Al Aug 2022

A Pleistocene Legacy Structures Variation In Modern Seagrass Ecosystems, J. Emmett Duffy, John J. Stachowicz, (...), Robert J. Orth, J. Paul Richadson, Et Al

VIMS Articles

Distribution of Earth’s biomes is structured by the match between climate and plant traits, which in turn shape associated communities and ecosystem processes and services. However, that climate–trait match can be disrupted by historical events, with lasting ecosystem impacts. As Earth’s environment changes faster than at any time in human history, critical questions are whether and how organismal traits and ecosystems can adjust to altered conditions. We quantified the relative importance of current environmental forcing versus evolutionary history in shaping the growth form (stature and biomass) and associated community of eelgrass (Zostera marina), a widespread foundation plant of …


Long-Term Observations Of Pteropod Phenology Along The Western Antarctic Peninsula, Patrica S. Thibodeau, Deborah K. Steinberg, Colleen E. Mcbride, John A. Conroy, Hugh W. Ducklow Dec 2020

Long-Term Observations Of Pteropod Phenology Along The Western Antarctic Peninsula, Patrica S. Thibodeau, Deborah K. Steinberg, Colleen E. Mcbride, John A. Conroy, Hugh W. Ducklow

VIMS Articles

Shifts in phenology – annually occurring life history events – have been observed among many marine organisms due to global warming. We examined if phenological changes in the pteropod (pelagic snail) Limacina helicina antarctica have occurred along the Western Antarctic Peninsula, one of the most intensely warming regions on Earth, which would have important implications for regional food web dynamics. Pteropod shell diameters were analyzed from samples collected in the Palmer Antarctica Long-Term Ecological Research (PAL LTER) program year-round sediment trap from 2004 to 2018. There was considerable interannual variability in the time of appearance of a new pteropod cohort, …