Results 91 to 100 of about 853 (176)
Stopping rule sampling to monitor and protect endangered species [PDF]
Ecological science and management often require animal population abundance estimates to determine population status, set harvest limits on exploited populations, assess biodiversity, and evaluate the effects of management actions.
Mitchell, Lara +2 more
core +2 more sources
Risk assessment of pesticides in estuaries: a review addressing the persistence of an old problem in complex environments [PDF]
, 2018 Co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-010145-FEDER-007728) REQUIMTE. FCT is also acknowledged for the grants SFRH/BPD/109734/2015 to M.M. and IF/00265/2015 to P.M.C.
Costa, Pedro M. +2 more
core +1 more source
Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis
Conservation Science and PracticeIdentifying the most important factors affecting population growth in animal life cycles is an important tool of species conservation. Delta Smelt (Hypomesus transpacificus), an annual fish endemic to the San Francisco Estuary in California (USA), has ...
Leo Polansky +2 more
doaj +1 more source
Ecological linkages: Marine and estuarine ecosystems of Central and Northern California [PDF]
, 2003 Three of California’s four National Marine Sanctuaries, Cordell Bank, Gulf of the Farallones, and Monterey Bay, are currently undergoing a comprehensive management plan review.
Airame, Satie +2 more
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Estimating the Size Selectivity of Fishing Trawls for a Short-Lived Fish Species [PDF]
, 2019 Long-term fish survey monitoring programs use a variety of fishing gears to catch fish, and the resulting catches are the basis for status and trends reports on the condition of different fish stocks.
Baxter, Randall +2 more
core +2 more sources
CRISPR‐based environmental DNA detection for a rare endangered estuarine species
Environmental DNAEnvironmental DNA (eDNA) methods complement traditional aquatic monitoring surveys and are especially advantageous for rare and listed species to detect spatial and temporal distribution patterns.
Raman P. Nagarajan +7 more
doaj +1 more source
Journal of Freshwater Ecology, 2005 ABSTRACT We examined the feeding habit of pond smelt (Hypomesus transpacificus nipponesis) and its impact on the zooplankton community in Lake Suwa, Japan, from May to December 2001. Stomach contents were analyzed, and prey importance and the prey selectivity index were estimated from the stomach contents of fish and prey density in the lake.
Kwang-Hyeon Chang +3 more
openaire +1 more source
San Francisco Estuary and Watershed Science, 2011 The delta smelt is a small, endemic fish that resides in the upper San Francisco Estuary. They are listed under state and federal Endangered Species Acts. Since 2002, their abundance has been at record low levels.
William J. Miller
doaj
Role of freshwater floodplain-tidal slough complex in the persistence of the endangered delta smelt.
PLoS ONE, 2019 Seasonal floodplain wetland is one of the most variable and diverse habitats found in coastal ecosystems, yet it is also one of the most highly altered by humans.
Brian Mahardja +4 more
doaj +1 more source
Washington state dairy producers were surveyed to determine pest and parasite prevalence and range of current pest management strategies. Nearly all respondents reported treating their cattle or premises for flies, while 62% reported treating their ...
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