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Total of 751 results See all subject areas
ecology

Mutualisms play a central role in the origin and maintenance of biodiversity. Because many mutualisms have strong demographic effects, interspecific variation in partner quality could have important consequences for population dynamics. Nevertheless, few studies...

["Ecology"]
doi:10.7287/peerj.preprints.368v1

Biotic resistance is the idea that native species negatively affect the invasion success of introduced species, but whether this can occur at large spatial scales is poorly understood. Here we re-evaluated the hypothesis that native large-bodied grouper and other...

["Conservation Biology","Ecology","Ecosystem Science","Marine Biology"]
doi:10.7717/peerj.348

Long-lived marine megavertebrates (e.g. sharks, turtles, mammals, and seabirds) are inherently vulnerable to anthropogenic mortality. Although some mathematical models have been applied successfully to manage these animals, more detailed treatments are often needed...

["Computational Biology","Ecology","Marine Biology","Mathematical Biology"]
doi:10.7287/peerj.preprints.364v1

Expression of phenotypic plasticity depends on reaction norms adapted to historic selective regimes; anthropogenic changes in these selection regimes necessitate contemporary evolution or extirpation. Adaptation of conditional strategies following a change in the...

["Aquaculture, Fisheries and Fish Science","Ecology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.361v1

Aerobic activity levels increase with body temperature across vertebrates. Differences in these levels, from highly active to sedentary, are reflected in their ecology and behavior. Yet, the changes in the cardiovascular system that allow for greater oxygen supply...

["Biodiversity","Ecology","Zoology"]
doi:10.7717/peerj.346

Models of collective animal behaviour frequently make assumptions about the effects of neighbours on the behaviour of focal individuals, but these assumptions are rarely tested. One such set of assumptions is that the switch between active and inactive behaviour...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.344

The links among scholarly citations creates a tremendous network that reveals patterns of influence and flows of ideas. The systematic evaluation of the networks can be used to create aggregate measures of journal influence. To understand the citation patterns...

["Ecology"]
doi:10.7287/peerj.preprints.43v2

In the Central Red Sea, healthy coral reefs meet intense coastal development, but data on the effects of related stressors for reef functioning are lacking. This in situ study therefore investigated the independent and combined effects of simulated overfishing...

["Ecology","Marine Biology","Zoology","Science and Medical Education"]
doi:10.7717/peerj.339

Caribbean coral reefs have deteriorated substantially over the past 30 years, which is broadly attributable to the effects of global climate change. In the same time, Indo-Pacific reefs maintain higher coral cover and typically recover rapidly after disturbances....

["Ecology","Marine Biology"]
doi:10.7717/peerj.333

Climate change has led to a decline in the health of corals and coral reefs around the world. Studies have shown that, while some corals can cope with natural and anthropogenic stressors either through resistance mechanisms of coral hosts or through sustainable...

["Ecology","Environmental Sciences","Marine Biology"]
doi:10.7717/peerj.327

Biodiversity hotspots have been used extensively in setting conservation priorities for reef ecosystems. A recent Nature publication claims to have uncovered new hotspots based on global comparisons of functional diversity. Simulation models show that the purported...

["Biodiversity","Conservation Biology","Ecology","Marine Biology"]
doi:10.7287/peerj.preprints.357v1

This study aimed to determine the association of herbivore behavior with cues from producers. We used stream grazer Glossosoma larvae and determined their crawling direction in relation to the chemical and visual cues from microalgae. The experimental treatments...

["Animal Behavior","Ecology"]
doi:10.7287/peerj.preprints.350v1

Predator–prey interactions are among the main ecological interactions that shape the diversity of biological form. In many cases, the evolution of the mollusc shell form is presumably driven by predation. However, the adaptive significance of several uncommon,...

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.329

Camera traps are commonly used for mammal surveys and many recent studies have published variable trap success rates. All published reports have focused survey efforts in protected areas or large contiguous forests, but we used camera traps in a highly altered...

["Biodiversity","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.344v1

Specialist herbivores are often thought to benefit the larger plant community, because they prevent their host species from becoming competitively dominant. In contrast, specialist enemies are not generally expected to have negative impacts on non-hosts. However,...

["Biodiversity","Ecology","Entomology","Plant Science"]
doi:10.7287/peerj.preprints.340v1

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