Environmental Degradation, Food Limitation and Reproductive Output: Juvenile Survival in Lesser Snow Geese

10.2307/5395 ◽  
1993 ◽  
Vol 62 (4) ◽  
pp. 766 ◽  
Author(s):  
T. D. Williams ◽  
E. G. Cooch ◽  
R. L. Jefferies ◽  
F. Cooke
Keyword(s):  
Environmental Degradation ◽  
Reproductive Output ◽  
Food Limitation ◽  
Juvenile Survival ◽  
Snow Geese ◽  
Lesser Snow Geese

Climate change, phenology, and habitat degradation: drivers of gosling body condition and juvenile survival in lesser snow geese

2012 ◽  
Vol 19 (1) ◽  
pp. 149-160 ◽  
Author(s):  
Lise M. Aubry ◽  
Robert F. Rockwell ◽  
Evan G. Cooch ◽  
Rodney W. Brook ◽  
Christa P. H. Mulder ◽  
...  
Keyword(s):  
Climate Change ◽  
Body Condition ◽  
Habitat Degradation ◽  
Juvenile Survival ◽  
Snow Geese ◽  
Lesser Snow Geese

Temporal Changes in Habitat Selection and Nest Spacing in a Colony of Ross' and Lesser Snow Geese

The Auk ◽  
1983 ◽  
Vol 100 (2) ◽  
pp. 335-343 ◽  
Author(s):  
M. Robert McLandress
Keyword(s):  
Nearest Neighbor ◽  
Average Distance ◽  
Habitat Preferences ◽  
Nearest Neighbors ◽  
Nest Density ◽  
Snow Goose ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Average Size ◽  
Island Habitats

Abstract I studied the nesting colony of Ross' Geese (Chen rossii) and Lesser Snow Geese (C. caerulescens caerulescens) at Karrak Lake in the central Arctic of Canada in the summer of 1976. Related studies indicated that this colony had grown from 18,000 birds in 1966-1968 to 54,500 birds in 1976. In 1976, geese nested on islands that were used in the late 1960's and on an island and mainland sites that were previously unoccupied. Average nest density in 1976 was three-fold greater than in the late 1960's. Consequently, the average distance to nearest neighbors of Ross' Geese in 1976 was half the average distance determined 10 yr earlier. The mean clutch size of Ross' Geese was greater in island habitats where nest densities were high than in less populated island or mainland habitats. The average size of Snow Goose clutches did not differ significantly among island habitats but was larger at island than at mainland sites. Large clutches were most likely attributable to older and/or earlier nesting females. Habitat preferences apparently differed between species. Small clutches presumably indicated that young geese nested in areas where nest densities were low. The establishment of mainland nesting at Karrak Lake probably began with young Snow Geese using peripheral areas of the colony. Young Ross' Geese nested in sparsely populated habitats on islands to a greater extent than did Snow Geese. Ross' Geese also nested on the mainland but in lower densities than Ross' Geese nesting in similar island habitats. Successful nests with the larger clutches had closer conspecific neighbors than did successful nests with smaller clutches. The species composition of nearest neighbors changed significantly with distance from Snow Goose nests but not Ross' Goose nests. Nesting success was not affected by the species of nearest neighbor, however. Because they have complementary antipredator adaptations, Ross' and Snow geese may benefit by nesting together.

scholarly journals Effects of seed-rich habitat provision on territory density, home range and breeding performance of European Turtle Doves Streptopelia turtur

2020 ◽  
pp. 1-20
Author(s):  
JENNY C. DUNN ◽  
ANTONY J. MORRIS ◽  
PHILIP V. GRICE ◽  
WILL J. PEACH
Keyword(s):  
Reproductive Output ◽  
Food Limitation ◽  
Home Ranges ◽  
Breeding Performance ◽  
Ranging Behaviour ◽  
Local Abundance ◽  
Turtle Dove ◽  
Human Habitation ◽  
Territory Density ◽  
Streptopelia Turtur

Summary Conservation measures providing food-rich habitats through agri-environment schemes (AES) have the potential to affect the demography and local abundance of species limited by food availability. The European Turtle Dove Streptopelia turtur is one of Europe’s fastest declining birds, with breeding season dietary changes coincident with a reduction in reproductive output suggesting food limitation during breeding. In this study we provided seed-rich habitats at six intervention sites over a 4-year period and tested for impacts of the intervention on breeding success, ranging behaviour and the local abundance of territorial turtle doves. Nesting success and chick biometrics were unrelated to the local availability of seed-rich habitat or to the proximity of intervention plots. Nestling weight was higher close to human habitation consistent with an influence of anthropogenic supplementary food provision. Small home ranges were associated with a high proportion of non-farmed habitats, while large home ranges were more likely to contain seed-rich habitat suggesting that breeding doves were willing to travel further to utilize such habitat where available. Extensively managed grassland and intervention plot fields were selected by foraging turtle doves. A slower temporal decline in the abundance of breeding males on intervention sites probably reflects enhanced habitat suitability during territory settlement. Refining techniques to deliver sources of sown, natural, and supplementary seed that are plentiful, accessible, and parasite-free is likely to be crucial for the conservation of turtle doves.

Weights of Lesser Snow Geese Taken on Their Winter Range

1979 ◽  
Vol 43 (2) ◽  
pp. 531 ◽  
Author(s):  
Edward L. Flickinger ◽  
Eric G. Bolen
Keyword(s):  
Winter Range ◽  
Snow Geese ◽  
Lesser Snow Geese

Prediction of reproductive success and failure in lesser snow geese based on early season climatic variables

1998 ◽  
Vol 4 (1) ◽  
pp. 3-16 ◽  
Author(s):  
W. R. Skinner ◽  
R. L. Jefferies ◽  
T. J. Carleton ◽  
R. F. Rockwell&dagger K. F. Abraham
Keyword(s):  
Reproductive Success ◽  
Climatic Variables ◽  
Early Season ◽  
Snow Geese ◽  
Lesser Snow Geese

Use of Supplemental Food by Breeding Ross's Geese and Lesser Snow Geese: Evidence for Variable Anorexia

The Auk ◽  
1999 ◽  
Vol 116 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Mark L. Gloutney ◽  
Ray T. Alisauskas ◽  
Keith A. Hobson ◽  
Alan D. Afton
Keyword(s):  
Supplemental Food ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Ross's Geese

scholarly journals A comparison of drone imagery and ground-based methods for estimating the extent of habitat destruction by lesser snow geese (Anser caerulescens caerulescens) in La Pérouse Bay

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0217049 ◽  
Author(s):  
Andrew F. Barnas ◽  
Brian J. Darby ◽  
Gregory S. Vandeberg ◽  
Robert F. Rockwell ◽  
Susan N. Ellis-Felege
Keyword(s):  
Habitat Destruction ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Anser Caerulescens Caerulescens ◽  
Anser Caerulescens

Nutrient reserve dynamics of lesser snow geese staging at James Bay, Ontario

1979 ◽  
Vol 57 (1) ◽  
pp. 213-219 ◽  
Author(s):  
Ronald C. P. Wypkema ◽  
C. Davison Ankney
Keyword(s):  
Body Weight ◽  
Follicular Development ◽  
James Bay ◽  
Fat Reserves ◽  
Adult Females ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Nutrient Reserve ◽  
Breeding Grounds ◽  
Juvenile Males

We compared mean body weights, nutrient reserves (fat and protein), and an index of feeding of lesser snow geese arriving at and leaving southern James Bay in spring and fall 1976. Feeding increased in spring and decreased in fall. Body weight and protein of adults increased in spring, and fat reserves were maintained. The protein increase of adult females was equivalent to the protein in one egg. Ovarian follicular development in adult females appeared to proceed as reserves became available. Juvenile males had completed body growth by the end of the fall staging period but juvenile females had not. Fat and protein reserves of adults arriving on James Bay in the fall were significantly larger than those of adults after wing molt on the breeding grounds. Fat reserves of adults and juveniles increased significantly during the fall; body weight of juvenile females increased also. The fat gain greatly increases the theoretical maximum flight range of the geese and we suggest it is an important determinant of normal fall migration.

Recruitment and Maternal Age in Lesser Snow Geese Chen caerulescens caerulescens

10.2307/4924 ◽  
1988 ◽  
Vol 57 (2) ◽  
pp. 553 ◽  
Author(s):  
Laurene Ratcliffe ◽  
R. F. Rockwell ◽  
F. Cooke
Keyword(s):  
Maternal Age ◽  
Chen Caerulescens ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Chen Caerulescens Caerulescens
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