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1. Grazer diversity interacts with biogenic habitat heterogeneity to accelerate intertidal algal succession

Author:
Whalen, Matthew A.; Aquilino, Kristin M.; Stachowicz, John J.
Source:
Ecology 2016 v.97 no.8 pp. 2136-2146
ISSN:
0012-9658
Subject:
Cirripedia; Gastropoda; complementary foods; ecosystems; grazing intensity; habitat preferences; habitats; herbivores; infant feeding; limpets; littoral zone; macroalgae; microalgae; species diversity
Abstract:
... Environmental heterogeneity contributes to coexistence by allowing species with different traits to persist when different species perform best at different times or places. This interaction between niche differences and environmental variability may also help explain relationships between biodiversity and ecosystem functioning, but few data are available to rigorously evaluate this hypothesis. We ...
DOI:
10.1890/15-1633.1

2. Higher β‐diversity observed for herbs over woody plants is driven by stronger habitat filtering in a tropical understory

Author:
Murphy, Stephen J.; Salpeter, Kara; Comita, Liza S.
Source:
Ecology 2016 v.97 no.8 pp. 2074-2084
ISSN:
0012-9658
Subject:
analysis of variance; environmental factors; habitats; herbaceous plants; herbs; lianas; longevity; mature plants; plant communities; seedlings; soil; species diversity; topography; trees; tropical forests; understory; variance; woody plants; Panama
Abstract:
... Herbaceous plants are a key component of tropical forests. Previous work indicates that herbs contribute substantially to the species richness of tropical plant communities. However, the processes structuring tropical herb diversity, and how they contrast with woody communities, have been underexplored. Within the understory of a 50‐ha forest dynamics plot in central Panama, we compared the divers ...
DOI:
10.1890/15-1801.1

3. Neighbor palatability generates associational effects by altering herbivore foraging behavior

Author:
Hahn, Philip G.; Orrock, John L.
Source:
Ecology 2016 v.97 no.8 pp. 2103-2111
ISSN:
0012-9658
Subject:
Solidago nemoralis; agricultural land; field experimentation; foraging; grasshoppers; habitats; herbivores; land use; palatability; plant density
Abstract:
... Despite increasing evidence that herbivory on a focal plant may hinge upon the identity of its neighbors, it is not clear whether predictable mechanisms govern the nature and magnitude of such associational effects. Using a factorial field experiment replicated at 14 sites across 80,000 hectares, we evaluated the mechanisms driving associational effects between two plant species mediated by grassh ...
DOI:
10.1002/ecy.1430
CHORUS:
10.1002/ecy.1430

4. Terrestrial support of aquatic food webs depends on light inputs: a geographically‐replicated test using tank bromeliads

Author:
Farjalla, Vinicius F.; González, Angélica L.; Céréghino, Régis; Dézerald, Olivier; Marino, Nicholas A. C.; Piccoli, Gustavo C. O.; Richardson, Barbara A.; Richardson, Michael J.; Romero, Gustavo Q.; Srivastava, Diane S.
Source:
Ecology 2016 v.97 no.8 pp. 2147-2156
ISSN:
0012-9658
Subject:
Bromeliaceae; aquatic food webs; aquatic invertebrates; environmental factors; freshwater; freshwater ecosystems; habitats; primary productivity; stable isotopes; subsidies; tanks; tropics
Abstract:
... Food webs of freshwater ecosystems can be subsidized by allochthonous resources. However, it is still unknown which environmental factors regulate the relative consumption of allochthonous resources in relation to autochthonous resources. Here, we evaluated the importance of allochthonous resources (litterfall) for the aquatic food webs in Neotropical tank bromeliads, a naturally replicated aquati ...
DOI:
10.1002/ecy.1432

5. Threshold effects of habitat fragmentation on fish diversity at landscapes scales

Author:
Yeager, Lauren A.; Keller, Danielle A.; Burns, Taylor R.; Pool, Alexia S.; Fodrie, F. Joel
Source:
Ecology 2016 v.97 no.8 pp. 2157-2166
ISSN:
0012-9658
Subject:
biomass; community structure; fauna; fish; fish communities; habitat destruction; habitat fragmentation; habitats; landscapes; prediction; seagrasses; spatial variation; species diversity
Abstract:
... Habitat fragmentation involves habitat loss concomitant with changes in spatial configuration, confounding mechanistic drivers of biodiversity change associated with habitat disturbance. Studies attempting to isolate the effects of altered habitat configuration on associated communities have reported variable results. This variability may be explained in part by the fragmentation threshold hypothe ...
DOI:
10.1002/ecy.1449