Breeding waterbird wetland habitat availability and response to water-level management in Saint John River floodplain wetlands, New Brunswick

2010 ◽  
pp. 169-181
Author(s):  
Kevin J. Connor ◽  
Shane Gabor
Keyword(s):  
New Brunswick ◽  
Water Level ◽  
Habitat Availability ◽  
Floodplain Wetlands ◽  
River Floodplain ◽  
Wetland Habitat ◽  
Saint John ◽  
Water Level Management ◽  
Response To Water

The relationship between seasonal water level fluctuation and habitat availability for wintering waterbirds at Shengjin Lake, China

2018 ◽  
Vol 29 (1) ◽  
pp. 100-114 ◽  
Author(s):  
CHUNLIN LI ◽  
YANG YANG ◽  
ZHEN WANG ◽  
LING YANG ◽  
DONGMEI ZHANG ◽  
...  
Keyword(s):  
Water Level ◽  
Deep Water ◽  
Yangtze River ◽  
Water Level Fluctuation ◽  
Habitat Availability ◽  
Level Fluctuation ◽  
River Floodplain ◽  
Waterbird Species ◽  
Suitable Habitats ◽  
The Relationship

SummaryConservation plans for waterbirds in periodically flooded wetlands should be based on a deep understanding of the relationship between habitat availability and the hydrological regime. Using waterbird surveys and remotely sensed images, we investigated how habitat availability for wintering waterbirds was regulated by seasonal water level fluctuation at Shengjin Lake in the lower Yangtze River floodplain, which is an important wintering area along the East Asian-Australasian Flyway. We recorded 52 waterbird species during three field surveys, and categorised them into four groups based on their foraging preferences: grassland, mudflats, shallow water, or deep water. Habitat availability for the four groups was significantly influenced by fluctuations in water level. Habitat for deep-water feeders dominated the lake throughout the year, despite contracting during the wintering season. Water recession during winter exposed more diverse riparian habitats that showed high spatial heterogeneity at the landscape level, with the Upper Lake providing the most suitable habitats for the most diverse and abundant waterbirds. It is worth noting that the water level was regulated highly for aquaculture during the early wintering period, impeding access to suitable habitats for the early-arriving waterbirds that foraged in the riparian mudflats and grassland. Furthermore, rapid water recession from the opening of a sluice gate allowed the exposed moist mudflats to dry up quickly, reducing its suitability for shorebirds and cranes. For effective wintering waterbird conservation in the ephemeral lacustrine wetlands in the Yangtze River floodplain, we suggest stepwise water recession plans, together with the recovery of the aquatic vegetation community and reduction in high-density aquaculture, to synchronise the exposure of foraging habitats with the migration phenology of different waterbird species.

Ecosystem development in Lake Volkerak-Zoom: concept and strategy

1995 ◽  
Vol 31 (8) ◽  
pp. 239-243 ◽  
Author(s):  
W. Ligtvoet ◽  
S. A. de Jong
Keyword(s):  
Water Level ◽  
Fish Stock ◽  
Ecosystem Development ◽  
Optimal Conditions ◽  
Stock Management ◽  
Key Factors ◽  
Integrated Water Management ◽  
Ecological Concepts ◽  
Freshwater System ◽  
Water Level Management

In the 6000 ha Lake Volkerak-Zoom, a new freshwater system in the estuarine southwest of The Netherlands, biomanipulation is used as a tool in ecosystem development. The basic ecological concepts for ecosystem development are described. Key factors in the integrated water management are fish stock management and water level management, geared towards creating optimal conditions for northern pike, the dominant predator in mesotrophic waters. The main aspects of the water level management and the fish stock management are outlined.

Timing and Extent of Drift of Shortnose Sturgeon Larvae in the Saint John River, New Brunswick, Canada

2013 ◽  
Vol 142 (3) ◽  
pp. 717-730 ◽  
Author(s):  
Sima Usvyatsov ◽  
Jeffrey Picka ◽  
Andrew Taylor ◽  
James Watmough ◽  
Matthew Kenneth Litvak
Keyword(s):  
New Brunswick ◽  
Shortnose Sturgeon ◽  
Saint John

scholarly journals RESERVOIR COAST RESPONSE TO WATER LEVEL FLUCTUATIONS

2015 ◽  
pp. 61
Author(s):  
A. Sh. Khabidov ◽  
K. V. Marusin ◽  
L. A. Zhindarev ◽  
E. A. Fedorova ◽  
E. A. Sviridova
Keyword(s):  
Water Level ◽  
Water Level Fluctuations ◽  
Response To Water
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