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Found 10 records similar to Atlantic Colonies - Density Analysis
These fish-eating colonial waterbirds breed and nest in colonies on islands in and around Fathom Five National Marine Park. Five species of colonial waterbird are monitored. These birds and their eggs are effective measures of environmental contamination and aquatic ecosystem health.
Gwaii Haanas has partnered with ECCC to monitor a set of permanent plots mapping colony structure and burrow occupancy rate by excavating samples of burrows of Ancient Murrelet and Cassin’s Auklet. The data are used to determine if the breeding population areas are changing at specific key nesting colonies and if the change signifies an increasing or decreasing population trend. An estimated 1.5 million seabirds breed colonially on the 200+ islands, islets and rocks of Haida Gwaii, including globally and nationally significant proportions of 5 seabird species. A significant threat to breeding seabirds is predation by non-native mammals, notably raccoons and rats.
Herring gull (Larus arentatus, HERG), great blue heron (Ardea Herodias GBHE), double-crested cormorant (Phalacrocorax auritus, DCCO) and ring-billed gull (Larus delawarensis, RBGU) have been monitored in Pukaskwa National Park since 1977 as part of the colonial waterbird monitoring program. A complete count of active nests on islands found along the ~120km of coast of Pukaskwa is conducted based on the Canadian Wildlife Service (CWS) protocol. The nest count is carried out during the peak of breeding over a period of 2-3 weeks. From 1977 – 1981, surveys were conducted annually and used an island numbering system (Old Colony Number in datasheet).
The distribution of nesting areas for bird colonies in coastal British Columbia showing relative abundance (RA) by season and overall relative importance (RI). RI is based on project region and not on the province as a whole. Number counts for various species in the colony location are provided. CRIMS is a legacy dataset of BC coastal resource data that was acquired in a systematic and synoptic manner from 1979 and was intermittently updated throughout the years.
Counts of nesting pelicans and cormorants at the Lavallee Lake colony are conducted each spring via aerial photography, and mortality is counted each fall by walking transects through the colony. Pelicans and cormorants feed on small and large freshwater fish up to 100 km from the colony and are an indicator of the health of the aquatic/terrestrial interface in the ecosystem.
Monitoring contaminants in gull and tern eggs is a useful tool for gaining insights into local environmental conditions because gulls and terns are integrators of processes occurring at lower levels in the food web and their eggs are generally formed using local food sources. Therefore, the chemical composition of the egg will reflect the chemical characteristics of the region in the vicinity of the breeding colony, including level of contaminants, such as mercury. Eggs are collected any time after laying, ideally well before hatching, but after the full clutch size (3 eggs) has been reached, generally around the middle of June. The collection site is a colony on Lake Mamawi, in the Peace Athabasca Delta; in addition to collection sites outside the park.
Areal Extent (hectares) of black-tailed prairie dog colonies in the Park monitored through colony perimeter mapping every 2 years. This is actively managed to increase prairie dog population through a combination of plague mitigation (i.e. dusting and sylvatic plague vaccine baits) and habitat enhancement/colony expansion (i.e. mowing edges, fire and grazing regimes) and upon feasibility and risk assessment, population expansion (i.e.
The coastal ecosystem is an indicator of the ecological integrity of the MANPRC. In total, 31 rare plant species are found in the coastal ecosystem of the MANCPR. Rare plants have been selected as a measure of the coastal ecosystem indicator. The objectives of the monitoring program are to detect changes over time in 1) the number of colonies of rare plants and 2) the abundance of focal species.
This dataset focuses on monitoring beaver colonies in Forillon National Park. Beavers have a major influence on aquatic ecosystems in the park. Monitoring fluctuations in this population can help us better understand variations in the physicochemical characteristics of watercourses and possibly in other aquatic populations in the park. Beaver colony data are collected primarily as part of a park-wide aerial survey by helicopter.
Data on the production and value of honey, beekeepers and colonies.