Ecology of female northern pintails during winter in the San Joaquin Valley, California

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Northern pintail -- Ecology -- California -- San Joaquin Va
Statementby Joseph P. Fleskes.
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Ecology of female northern pintails during winter in the San Joaquin Valley, California Public DepositedCited by: 5.

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Ecology of female northern pintails during winter in the San Joaquin Valley, California by Joseph P. Fleskes, edition, in EnglishPages: ECOLOGY OF FEMALE NORTHERN PINTAILS DURING WINTER IN THE SAN JOAQUIN VALLEY, CALIFORNIA by Joseph P.

Fleskes A DISSERTATION submitted to Oregon State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Complete: Novem Commencement: June Ecology of female northern pintails during winter in the San Joaquin Valley, California.

Abstract. Graduation date: I radio-tagged Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March.

Ecology of female northern pintails during winter in the San Joaquin Valley, California. Dissertation, Oregon State University, Corvallis, Oregon, USA. Fleskes, J., J. Yee, M. Casazza, J.

Daugherty and B. Perry. Waterfowl distribution, movements, and habitat use relative to recent habitat changes in the Central Valley of California: A. To improve understanding of pintail ecology, we radiotagged hatch-year (HY) and after-hatch-year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), and studied.

Abstract. - Female Northern Pintails (Anas acuta) were sampled in California's three main Central Valley win-tering regions (Sacramento Valley, Suisun Marsh, San Joaquin Valley) during September-October before most re-gional movements occur and microsatellite and mitochondrial DNA were analyzed to examine population structure and relatedness.

Fig. Regions of California and areas within the San Joaquin Valley used by northern pintails during Sep-Mar, magnitude, timing, and causes of female pintail mortality during winter are needed to effectively manage continental pintail populations (USFWS and CWSReynolds et al.

Miller et al. () radiotagged pintails. Northern Harrier, San Joaquin River NWR Similar in appearance to it's larger cousin the Cooper's Hawk, Sharp-shinned Hawks visit our area only during the winter months. Look for their blue-gray upper parts, reddish barred chest and pencil-thin legs.

The Central Valley Bird Club (CVBC) is dedicated to the study of the distribution, status, ecology, and conservation of birds in the Central Valley of California. SOCIAL LINKS CV Birds on To improve understanding of pintail ecology, we radiotagged hatch-year (HY) and after-hatch-year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), and studied their survival throughout central California, USA, during September-March, We used adjusted Akaike Information Criterion (AICc) values to contrast known-fate models and examine variation in.

Pintail Flight Paths As part of a 3-year study of northern pintail wintering ecology, 58 Hatch-Year (HY) and 65 After-Hatch-Year (AHY) female pintails were captured, radiotagged, and released in the San Joaquin Valley, California during August and September, (Fleskes ). To determine relative importance of habitats available in the Grassland Ecological Area (GEA) to wintering female northern pintails, Anas acuta, we studied habitat use relative to availability (i.e., habitat selection) in the GEA during September through March, for Hatch-Year (HY) and After-Hatch-Year (AHY) female pintails that were radio tagged during August-early October in.

Request PDF | Pintail distribution and selection of marsh types at Mendota Wildlife Area during fall and winter | To help guide management of Mendota Wildlife Area (MWA), we determined. Andrew M. Ramey, Joseph P. Fleskes, Joel A. Schmutz, Michael J. Yabsley, Evaluation of blood and muscle tissues for molecular detection and characterization of hematozoa infections in northern pintails (Anas acuta) wintering in California, International Journal for Parasitology: Parasites and Wildlife, /, 2, ( In addition, food resources (both relative and absolute abundances) were lower during winter than summer.

From these data I infer that the intensity of interspecific competition and its effect on waterfowl community structure is seasonal, with greater resource limitation and, therefore, resource partitioning during "lean" winter months than. The San Joaquin Valley is a sediment-filled depression, called a basin, that is bound to the west by the California Coast Ranges, and to the east by the Sierra Nevadas.

It is classified as a forearc basin, which basically means that it is a basin that formed in front of a mountain range. The San Joaquin Valley (/ ˌ s æ n hw ɑː ˈ k iː n / SAN whah-KEEN) is the area of the Central Valley of the U.S.

state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin comprises seven counties of Northern and one of Southern California, including, in the north, all of San Joaquin and Kings counties, most of Stanislaus.

Pintail Flight Paths As part of a 3-year study of northern pintail winter- ing ecology, 58 Hatch-Year (HY) and 65 After-Hatch-Year (AHY) female pintails were captured, radiotagged, and released in the San Joaquin Valley, California during Au- gust and September, (Fleskes ). We examined carcass composition and proximate food composition of ruddy ducks (Oxyura jamaicensis), northern shovelers (Anas clypeata), and northern pintails (Anas acuta) wintering on agricultural drainwater ponds in California during – Lipids varied seasonally in northern shovelers and northern pintails.

Protein did not fluctuate except in ruddy ducks whose protein mass increased. The Central Valley of California (), USA, is one of the most important waterfowl wintering areas in the world (BellroseGilmer et al.

).Half or more of the northern pintails (Anas acuta; hereafter pintail) in North America migrate to and winter in California, arriving as early as the first week of August and remaining through March (BellroseAustin and Miller ).

Tags San Joaquin Valley, California, Grasslands Ecological Area, Central Valley, telemetry, Anas acuta., northern pintail, winter, environment Summary The purpose of this data set is to improve understanding of the ecology of northern pintails in California and serve as baseline data on which to measure impacts of changes in the Central Valley.

Number sampled and tested hematozoa-negative (none) and hematozoa-positive mallard (Anas platyrhynchos), northern pintail (A. acuta), northern shoveler (A.

Description Ecology of female northern pintails during winter in the San Joaquin Valley, California EPUB

clypeata), green-winged teal (A. crecca), and American wigeon (A. americana) wintering in the Sacramento Valley (SACV) and the San Joaquin Valley (SJV) of California during October Ducks Unlimited is supporting research on Northern Pintails in partnership with Texas A&M University – Kingsville, the U.S.

Fish and Wildlife Service, and the Texas Parks and Wildlife Department. The pintail is a species of greatest conservation need in many State Wildlife Action Plans and continues to be a species of focus in all four Flyways. Miller, M.R. Fall and winter foods of northern pintails in the Sacramento Valley, California.

Journal of Wildlife Management Miller, M.R. Northern pintail body condition during wet and dry winters in the Sacramento Valley, California. Journal of Wildlife Management San Joaquin Valley Sacramento Valley 74 and water supply management on the habitats and ecology of waterbirds in California’s Central Valley.

The project has of female northern pintails collected throughout the Texas Coast across winter, estimate energy and nutrient composition.

Feeding ecology of breeding gadwalls on saline wetlands. Feeding ecology of northern pintails and green-winged teal wintering in California. Feeding ecology of pintail hens during reproduction.

Feeding ecology of pintail, gadwall, American widgeon and lesser scaup ducklings in southern Alberta. Led research project on northern pintail ecology in the San Joaquin Valley.

Jun Jan Wildlife Biologist, National Biological Service, California Science Center, Dixon Field Station, Dixon, CA. Led research project on northern pintail ecology in the San Joaquin Valley. AprJun Adult (i.e., after first calendar year) female pintails (n = ) were captured and radio-marked during late August through early October of each study year at three wetland locations; the Colusa Basin in the northern CVC, the Suisun Marsh just to the west of the CVC, and the Grassland Ecological Area and Mendota Wildlife Area in the southern CVC.

Northern pintail Anas acuta (hereafter pintail) populations wintering within Suisun Marsh, a large estuarine managed wetland near San Francisco Bay, California, USA, have declined markedly over the last four decades.

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The reasons for this decline are unclear. Information on how hunting and other factors influence the selection of vegetation types and sanctuaries would be beneficial to manage. San Joaquin Valley, valley in central California, U.S., the southern part of the state’s vast Central Valley.

Lying between the Coast Ranges (west) and the Sierra Nevada (east), it is drained largely by the San Joaquin River. The valley is one of the most productive agricultural regions in the.Pintails were radio tagged during August - early October at MWA (n = ), other San Joaquin Valley areas (n = 27), or Suisun Marsh (n = 2).

Before duck hunting season (i.e., Prehunt), pintail distribution at MWA generally tracked marsh flooding although distribution was more concentrated during the .A California Chapter of the National Audubon Society Serving the communities of Stockton, Lodi, Tracy, Manteca, Escalon, Ripon, and Lathrop--All of San Joaquin County.

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