Results 51 to 60 of about 436 (131)

New observations and corrections concerning the trio of invasive hydromedusae Maeotias marginata (=M. inexpectata), Blackfordia virginica, and Moreisia sp. in the San Francisco Estuary

Scientia Marina, 2000
New observations of Maeotias, Blackfordia, and Moerisia in low salinity waters of the San Francisco Bay estuary allow better understanding of the life cycles and natural history of these three genera of invading hydrozoans.
Claudia Mills, John T. Rees
doaj   +1 more source

Delineating incised stream sediment sources within a San Francisco Bay tributary basin [PDF]

Earth Surface Dynamics, 2016
Erosion and sedimentation pose ubiquitous problems for land and watershed managers, requiring delineation of sediment sources and sinks across landscapes.
P. Bigelow, L. Benda, S. Pearce
doaj   +1 more source

Four decades of water quality change in the upper San Francisco Estuary [PDF]

Estuarine, Coastal and Shelf Science, 2018
Quantitative descriptions of chemical, physical, and biological characteristics of estuaries are critical for developing an ecological understanding of drivers of change. Historical trends and relationships between key species of dissolved inorganic nitrogen (ammonium, nitrate/nitrite, total) from the Delta region of the San Francisco Estuary were ...
Marcus W. Beck, Thomas W. Jabusch, Philip R. Trowbridge, David B. Senn   +3 more
openaire   +2 more sources

Seasonal Differences in Migration Routes and Stopover Use of Greater Sand Plovers Between Mongolia and the Beibu Gulf Revealed by GPS Tracking

Ecology and Evolution, Volume 16, Issue 7, July 2026.
GPS‐GSM tracking of Greater Sand Plovers along the East Asian‐Australasian Flyway revealed seasonal differences in migration routes and stopover allocation between the northern Beibu Gulf and Mongolia. Spring northward migration was associated with a higher travel‐to‐stopover ratio, whereas autumn southward migration involved a greater proportion of ...
Lei Xu, Zhiying Cheng, Tao Meng, Gang Yang, Aiwu Jiang   +4 more
wiley   +1 more source

Part II, Conclusion: Ecology and Regional Context of Tidal Wetlands in the San Francisco Bay National Estuarine Research Reserve

San Francisco Estuary and Watershed Science, 2012
China Camp State Park and Rush Ranch Open Space Preserve contain rare examples of historic tidal wetlands, undeveloped coastal hills and grasslands, and a variety of ecotones once common (but now rare) in the San Francisco Estuary.
Matthew C. Ferner
doaj  

Elusive and vulnerable: evaluating spatial and temporal variation in the distribution of manta rays around O’ahu using environmental DNA

Frontiers in Marine Science
Reef mantas (Mobula alfredi) around the Hawaiian Islands are vulnerable to extinction due to the low genetic diversity and resident populations that exhibit limited migration between islands.
Grace Ann Tuthill-Christensen, Michelle J. Jungbluth, Karen D. Crow   +2 more
doaj   +1 more source

Social attraction used to establish Caspian tern nesting colonies in San Francisco Bay

Global Ecology and Conservation, 2019
Conservation of colonial waterbird breeding populations often includes restoring historic nesting habitat or establishing new nesting habitat in protected areas.
C. Alex Hartman, Joshua T. Ackerman, Mark P. Herzog, Cheryl Strong, David Trachtenbarg   +4 more
doaj   +1 more source

The Complete Mitogenome of the Estuarine Clam Potamocorbula amurensis (Corbulidae, Myida) and Its Implications for Phylogeny and Adaptation

Ecology and Evolution, Volume 16, Issue 7, July 2026.
This study reports the first complete mitogenome of the estuarine clam Potamocorbula amurensis, revealing its phylogenetic position as a sister group to the Myidae–Dreissenidae clade. Molecular dating indicates a Middle Jurassic divergence, and positive selection was detected in the nad5 gene, suggesting mitochondrial adaptations to osmotic stress in ...
Xuyi Yang, Yalin Feng, Liang Xu, Zan Liu, Tinghui Xie, Zefeng Yu, Junyuan Li   +6 more
wiley   +1 more source

Ocean alkalinity enhancement in an estuary

Frontiers in Climate
A high-resolution numerical ocean model is used to assess ocean alkalinity enhancement (OAE) in the San Francisco Bay (SFB) estuary. A novel tracer-based approach is introduced to simulate alkalinity release and the subsequent CO2 ingassing. The model is
Minna Ho, Minna Ho, Jeroen Molemaker, Pierre Damien, Matthew C. Long, Daniele Bianchi, James C. McWilliams   +6 more
doaj   +1 more source

Selenium speciation dynamics in the Baltic and North Seas: Competing influences of marine and terrestrial inputs, biological activity, and redox conditions

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Despite the importance of coastal areas for the transfer of selenium (Se) from rivers to the open ocean and its bioavailability to food webs, dissolved Se concentrations and speciation in these ecosystems remain poorly understood. We conducted a 3‐yr study with monthly water column sampling at five stations spanning from the North Sea to the ...
Esther S. Breuninger, Elyssa Beyrouti, Julie Tolu, Zoé Le Bras, Sylvain Bouchet, Lenny H.E. Winkel   +5 more
wiley   +1 more source