Results 11 to 20 of about 436 (131)

Temporal and spatial variation in population structure among brooding sea stars in the genus Leptasterias

open access: yesEcology and Evolution, 2021
Temporal genetic studies of low‐dispersing organisms are rare. Marine invertebrates lacking a planktonic larval stage are expected to have lower dispersal, low gene flow, and a higher potential for local adaptation than organisms with planktonic ...
Laura M. Melroy, C. Sarah Cohen
doaj   +1 more source

An Open Data Framework for the San Francisco Estuary [PDF]

open access: yesSan Francisco Estuary and Watershed Science, 2020
Author(s): Baerwald, Melinda R.; Davis, Brittany E.; Lesmeister, Sarah; Mahardja, Brian; Pisor, Rachel; Rinde, Jenna; Schreier, Brian; Tobias, Vanessa | Abstract:
Melinda Baerwald   +7 more
openaire   +3 more sources

Powering Life in the Water: Phytoplankton in the San Francisco Estuary [PDF]

open access: yesFrontiers for Young Minds, 2021
Phytoplankton are probably the most important aquatic organisms that you have NEVER seen! Phytoplankton are nearly invisible and use sunlight, carbon dioxide, and nutrients in water to produce sugars that power the estuary food web. The amount of phytoplankton growth is important because phytoplankton are the food for aquatic animals like zooplankton ...
Alexander E. Parker, Peggy W. Lehman
openaire   +1 more source

Using Satellite AIS to Analyze Vessel Speeds Off the Coast of Washington State, U.S., as a Risk Analysis for Cetacean-Vessel Collisions

open access: yesFrontiers in Marine Science, 2020
Most species of whales are vulnerable to vessel collisions, and the probability of lethality increases logistically with vessel speed. An Automatic Identification System (AIS) can provide valuable vessel activity data, but terrestrial-based AIS has a ...
Nathan C. Greig   +7 more
doaj   +1 more source

Age‐ and sex‐related dietary specialization facilitate seasonal resource partitioning in a migratory shorebird

open access: yesEcology and Evolution, 2021
Dietary specialization is common in animals and has important implications for individual fitness, inter‐ and intraspecific competition, and the adaptive potential of a species. Diet composition can be influenced by age‐ and sex‐related factors including
Laurie A. Hall   +4 more
doaj   +1 more source

Delivering Food to Hungry Fish in the San Francisco Estuary [PDF]

open access: yesFrontiers for Young Minds, 2021
The San Francisco Estuary is home to an important endangered fish called delta smelt. Delta smelt eat small, nutritious animals called zooplankton to survive and grow. In turn, zooplankton grow by eating microscopic plant-like organisms called phytoplankton. In the past, the Estuary was full of plankton and delta smelt.
Laura Twardochleb   +4 more
openaire   +1 more source

Interactions Between Temperature Variability and Reproductive Physiology Across Traits in an Intertidal Crab

open access: yesFrontiers in Physiology, 2022
Thermal extremes alter population processes, which can result in part from temperature-induced movement at different spatial and temporal scales. Thermal thresholds for animal movement likely change based on underlying thermal physiology and life-history
Emily K. Lam   +11 more
doaj   +1 more source

Mesozooplankton omnivory in the upper San Francisco Estuary [PDF]

open access: yesMarine Ecology Progress Series, 2007
While many studies have examined mesozooplankton feeding in coastal environments, less attention has been given to this subject in estuaries. We used bottle incubation experiments to measure the feeding rates of a cladoceran (Daphnia sp.), a calanoid copepod (Acartia spp.), and 2 cyclopoid copepods (Oithona davisae and Limnoithona tetraspina) on the ...
Rollwagen-Bollens, G.   +2 more
openaire   +1 more source

Resistance and Resilience of Pelagic and Littoral Fishes to Drought in the San Francisco Estuary [PDF]

open access: yesEcological Applications, 2020
Many estuarine ecosystems and the fish communities that inhabit them have undergone substantial changes in the past several decades, largely due to multiple interacting stressors that are often of anthropogenic origin. Few are more impactful than droughts, which are predicted to increase in both frequency and severity with climate change. In this study,
Brian Mahardja   +8 more
openaire   +2 more sources

Application of a New Shore-Based Vessel Traffic Monitoring System Within San Francisco Bay

open access: yesFrontiers in Marine Science, 2020
Vessel traffic management systems can be employed for environmental management where vessel activity may be of concern. One such location is in San Francisco Bay where a variety of vessel types transit a highly developed urban estuary. We analyzed vessel
Samantha Cope   +8 more
doaj   +1 more source

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