Atlantic coast joint venture waterfowl implementation plan

səhifə	78/78
tarix	27.06.2016
ölçüsü	7.28 Mb.

1 ... 70 71 72 73 74 75 76 77 78

Table B.2. Mean (1990-2001) Mid-winter Survey counts for selected species in the Atlantic Coast Joint Venture. Mean totals are averages of yearly totals for the entire U.S. portion of the Atlantic Flyway. Species abbreviations are 4-letter ABA codes.


	Species
State	ABDU	AGWT	AMWI	CANV	GADW	MALL	NOPI	NSHO	REDH	RNDU	RUDU
Connecticut	3,000	0	0	1,000	0	1,000	0		0	0
Delaware	11,000	5,000	0	1,000	1,000	8,000	4,000	1,000		1,000	1,000
Florida	0	12,000	14,000	2,000	1,000	1,000	6,000	4,000	90,000	48,000	4,000
Georgia	0	2,000	1,000	3,000	1,000	2,000	0	0	0	11,000	0
Maine	17,000	0				1,000	0				0
Maryland	23,000	2,000	2,000	44,000	2,000	47,000	2,000	0	2,000	3,000	33,000
Massachusetts	21,000	0	0	0	0	3,000	0				0
New Hampshire	1,000	0		0		1,000				0
New Jersey	80,000	3,000	2,000	6,000	1,000	29,000	2,000	0	0	0	1,000
New York	21,000	0	0	9,000	0	20,000	0	0	7,000	0	1,000
North Carolina	10,000	29,000	12,000	11,000	6,000	14,000	25,000	1,000	8,000	9,000	12,000
Pennsylvania	3,000	0	0	0	0	6,000	0	0	0	0	0
Rhode Island	2,000		0	0	0	1,000			0		0
South Carolina	3,000	29,000	14,000	0	5,000	12,000	9,000	4,000	0	24,000	1,000
Vermont	0			0		0	0
Virginia	22,000	2,000	3,000	18,000	3,000	19,000	1,000	0	1,000	5,000	13,000
West Virginia	1,000	0	0	0	0	4,000	0		0	0	0

Mean Totals	221,000	81,000	49,000	96,000	19,000	169,000	49,000	11,000	109,000	101,000	66,000

Table B.3. Atlantic Flyway totals for duck species that have established NAWMP population objectives. Mid-winter Survey means are shown for the 1970s (NAWMP baseline) and the 1990s. Flyway wide wintering habitat capability indices (WHCI) are shown for two different methods. The first, NSST, shows the National Science Support Team’s recommended method of using MWS to determine proportional allocation of individuals by state. The second, Harvest, uses only harvest survey data to determine the proportional allocation between counties which are then summed to the state level.

	MWS Means		Step-down Method
Common Name	1970s	1990s	NSST	Harvest^b
American Black Duck ^a	262,426	219,949	268,433	232,953
American Wigeon	68,880	50,904	149,000	382,000
Canvasback	116,853	97,639	194,000	140,000
Gadwall	21,144	16,929	19,000	96,000
Green-winged Teal	60,169	83,066	93,000	167,000
Mallard	215,180	169,471	303,000	987,000
Northern Pintail	96,131	50,760	129,000	387,000
Northern Shoveler	11,807	10,694	22,000	129,000
Redhead	119,806	108,143	115,000	90,000

Total Ducks	972,396	807,554	1,292,433	2,610,953

^a – Population objective used for step-down methods corresponds to 1986 wintering objective of 385,000 ducks in the Atlantic (260,000) and Mississippi (125,000) Flyways. This objective is approximately 46% of the population objective published in the 2005 NAWMP Update (640,000).
^b – Uses harvest data for December through February only.

Method must allow for development of sound evaluation plan. At this time that would not be possible.

The Waterfowl Technical Committee and staff of the ACJV are resolved to pursue further development of scientifically sound, objective method to determine the amount of habitat that is necessary to protect, enhance and restore to meet our responsibilities under the North American Waterfowl Management Plan. However, we believe there are too many biases and information gaps to begin designing conservation plans based on the analyses that have been presented here.

1 ... 70 71 72 73 74 75 76 77 78