Mammals Imported Into the United States in 1968
Author: Clyde Jones
Publisher:
Published: 1970
Total Pages: 36
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Clyde Jones
Publisher:
Published: 1970
Total Pages: 36
ISBN-13:
DOWNLOAD EBOOKAuthor: U. S. Fish and Wildlife Service
Publisher:
Published: 1974
Total Pages: 52
ISBN-13:
DOWNLOAD EBOOKAuthor: Roger B. Clapp
Publisher:
Published: 1974
Total Pages: 728
ISBN-13:
DOWNLOAD EBOOKAuthor: Roger B. Clapp
Publisher:
Published: 1973
Total Pages: 56
ISBN-13:
DOWNLOAD EBOOKMammals imported into the United States in 1971 are tabulated by species and country of origin. Total numbers imported from 1968 through 1971 are given for higher taxa and for species most frequently imported. The numbers of mammals imported in 1971 decreased slightly from those imported in 1970 largely as a result of decreased importation of rabbits from Canada. Lists of rare and endangered species imported and of mammals whose importation is restricted are also given.
Author: Richard C. Banks
Publisher:
Published: 1976
Total Pages: 24
ISBN-13:
DOWNLOAD EBOOKInformation on reptiles and amphibians imported into the United States is available only for 1970 and 1971. Turtles were the most commonly imported reptiles, frogs and toads the most commonly imported amphibians.
Author:
Publisher:
Published: 1971
Total Pages: 1388
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1949
Total Pages: 394
ISBN-13:
DOWNLOAD EBOOKAuthor: John L Long
Publisher: CSIRO PUBLISHING
Published: 2003-08-14
Total Pages: 612
ISBN-13: 0643099166
DOWNLOAD EBOOKWinner in the Scholarly Reference section of the 2004 Australian Awards for Excellence in Educational Publishing. Introduced Mammals of the World provides a concise and extensive source of information on the range of introductions of mammals conducted by humans, and an indication as to which have resulted in adverse outcomes. It provides a very valuable tool by which scientists can assess future potential introductions (or re-introductions) to avoid costly mistakes. It also provides tangible proof of the need for political decision makers to consider good advice and make wise and cautious decisions. Introduced Mammals of the World also provides a comprehensive reference to students of ecological systems management and biological conservation. This book is a companion volume to Introduced Birds of the World, by the same author, published in 1981, and which remains the premier text of its kind in the world more than twenty years after it was published. Introduced Mammals of the World provides the most comprehensive account of the movement of mammals around the world providing details on the date(s) of introduction, the person/agency responsible, the source populations, the location(s) of release, the fate of the introductions, and the impact if known, for over 300 species of mammal.
Author: James L. Ruos
Publisher:
Published: 1971
Total Pages: 638
ISBN-13:
DOWNLOAD EBOOKU.S. mourning dove population indexes increased by 4% from 1969 to 1970 in the Eastern Management Unit, but declined 2% in the Central Management Unit and 11% in the Western Management Unit. The changes were below the 10-year means, 1960-69, by 3% in the Eastern Unit, 15% in the Central, and 27% in the Western. Regression analyses of the call-count data for 1960-70 indicate a statistically significant downward trend in dove breeding populations in all management units; mean rates of decline were 1% a year in the Eastern Unit, 3% a year in the Central, and 4% in the Western
Author: Lytle Houston Blankenship
Publisher:
Published: 1970
Total Pages: 582
ISBN-13:
DOWNLOAD EBOOKOf 37,000 reports of mourning dove band recoveries in the files of the Migratory Bird Populations Station on October 30, 1967, 1,120 came from Mexico, and half of those were from Jalisco and Michoacan, both in west-central Mexico; Jalisco alone accounted for nearly a third. Few recoveries were reported from the area between the U.S. border and mid-Mexico. Generally, lower proportions of total recoveries were reported from Mexico under the current pre-hunting season banding program for flying birds than were reported from the nestling dove banding program of the 1950's. Bandings in the northern U.S. States produced proportionally more recoveries than bandings in the southern U.S. States. Doves banded over diverse areas of the United States were harvested in common migration with wintering areas in Mexico. Possible explanations of the heterogeneous distribution of recoveries throughout Mexico are discussed. Of the banded birds for which "how obtained" was known, 83.5 percent were reported as shot (or killed) and only 3.2 percent reported as captured or trapped. Among 658 persons who gave their name and residence when they reported bands, 95.7 percent had typically Spanish surnames and were residents of Mexico. Depending upon actual banding reporting rates and the representativeness of the banding data analyzed, the Mexican dove harvest may equal or exceed harvests in leading U.S. States. Factors influencing band reporting rates must be resolved before Mexico's importance as a harvest area can be accurately determined.