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- Biological Sciences Peer-Reviewed Articles (1)
- Fisheries Science Peer-Reviewed Articles (1)
- SEAGRASS MEADOWS; SALT-MARSH; GROWTH; GERMINATION; MACROPHYTE; INGESTION; TORTOISES; PATTERNS; TURTLES (1)
- Small-Scale Turbulence; Non-Calanoid Copepods; Aggregates Lake Snow; Daphnia-Galeata; Midsummer Decline; Nonconsumptive Mortality; Crustacean Zooplankton; Climate-Change; Vertical-Distribution; Population-Growth (1)
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Articles 1 - 6 of 6
Full-Text Articles in Entire DC Network
Intraspecific Intrusion At Bald Eagle Nests, Courtney Turrin, B. D. Watts
Intraspecific Intrusion At Bald Eagle Nests, Courtney Turrin, B. D. Watts
Arts & Sciences Articles
Competition for nesting territory has been shown to act as a density-dependent feedback mechanism influencing population growth rate. However, little is known about the nature of territorial interactions between established breeders and floaters. We examined territorial intrusion rates and associated behaviours at active Bald Eagle Haliaeetus leucocephalus nests in the lower Chesapeake Bay in 2012 and 2013. The average intrusion rate experienced at study nests during the reproductive period was 0.28 ± 0.32 intrusions/h. Variance in intrusion rate was high and there was no apparent predictive pattern to these events. Juvenile intrusions occurred closer to the nest than adult intrusions, …
Zooplankton Carcasses And Non-Predatory Mortality In Freshwater And Inland Sea Environments, Kw Tang, Mi Gladyshev, Op Dubovskaya, G Kirillin, Hp Grossart
Zooplankton Carcasses And Non-Predatory Mortality In Freshwater And Inland Sea Environments, Kw Tang, Mi Gladyshev, Op Dubovskaya, G Kirillin, Hp Grossart
VIMS Articles
Zooplankton carcasses are ubiquitous in marine and freshwater systems, implicating the importance of non-predatory mortality, but both are often overlooked in ecological studies compared with predatory mortality. The development of several microscopic methods allows the distinction between live and dead zooplankton in field samples, and the reported percentages of dead zooplankton average 11.6 (minimum) to 59.8 (maximum) in marine environments, and 7.4 (minimum) to 47.6 (maximum) in fresh and inland waters. Common causes of non-predatory mortality among zooplankton include senescence, temperature change, physical and chemical stresses, parasitism and food-related factors. Carcasses resulting from non-predatory mortality may undergo decomposition leading to …
Evidence Of Eelgrass (Zostera Marina) Seed Dispersal By Northern Diamondback Terrapin (Malaclemys Terrapin Terrapin) In Lower Chesapeake Bay, Diane C. Tulipani, Romuald N. Lipcius
Evidence Of Eelgrass (Zostera Marina) Seed Dispersal By Northern Diamondback Terrapin (Malaclemys Terrapin Terrapin) In Lower Chesapeake Bay, Diane C. Tulipani, Romuald N. Lipcius
VIMS Articles
The initial discovery in May 2009 of eelgrass (Zostera marina) seeds in fecal samples of wild-caught northern diamondback terrapins (Malaclemys terrapin terrapin) was the first field evidence of eelgrass seed ingestion in this species. This finding suggested the potential of terrapins as seed dispersers in eelgrass beds, which we sampled for two additional years (2010 and 2011). Seeds were only found in feces of terrapins captured prior to June 8 in all three years, coinciding with eelgrass seed maturation and release. Numbers of seeds in terrapin feces varied annually and decreased greatly in 2011 after an eelgrass die off in …
Rise Of A Floater Class: Behavioral Adjustments By Breeding Bald Eagles In A Population Approaching Saturation, Courtney L. Turrin
Rise Of A Floater Class: Behavioral Adjustments By Breeding Bald Eagles In A Population Approaching Saturation, Courtney L. Turrin
Dissertations, Theses, and Masters Projects
No abstract provided.
Structure, Drivers, And Trophic Interactions Of The Demersal Fish Community In Chesapeake Bay, Andre Buchheister
Structure, Drivers, And Trophic Interactions Of The Demersal Fish Community In Chesapeake Bay, Andre Buchheister
Dissertations, Theses, and Masters Projects
Management of fisheries resources is increasingly broadening its scope from single-species approaches to more holistic, ecosystem-based approaches that account for interactions of fish with a variety of ecological factors, such as predators, prey, and habitat. This ecosystem based fisheries management (EBFM) approach requires thorough biological and ecological understanding of systems pertaining to community structure, habitat suitability, and food web interactions. to strengthen the ecological underpinnings of EBFM efforts in Chesapeake Bay, the largest estuary in the USA, I conducted synoptic analyses examining the structure, function, and patterns of the bay's demersal fish community. This research relied on I0 years of …
Positive Steady State Solutions Of A Diffusive Leslie-Gower Predator-Prey Model With Holling Type Ii Functional Response And Cross-Diffusion, Jun Zhou, Chan-Gyun Kim, Junping Shi
Positive Steady State Solutions Of A Diffusive Leslie-Gower Predator-Prey Model With Holling Type Ii Functional Response And Cross-Diffusion, Jun Zhou, Chan-Gyun Kim, Junping Shi
Arts & Sciences Articles
In this paper we consider a diffusive Leslie Gower predator prey model with Holling type II functional response and cross-diffusion under zero Dirichlet boundary condition. By using topological degree theory, bifurcation theory, energy estimates and asymptotic behavior analysis, we prove the existence, uniqueness and multiplicity of positive steady states solutions under certain conditions on the parameters.