8 dossier(s) trouvé(s) portant l’étiquette "ducks" (les projets pluriannuels sont regroupés): Vous ne trouvez pas les résultats souhaités? Essayez la recherche avancée..
chercheur principal:Karasiuk, Donald Année(s) de permis:
1979
Résumé:
(1) To conduct an inventory of tern and gull colonies: up to 20 herring gull eggs will be collected for pesticide analysis - North Arm of Great Slave Lake. (2) To conduct investigations into the concentrations of arsenic and heavy metals in ducks - Yellowknife area. (3) To conduct annual breeding bird census programs - Yellowknife area....
chercheur principal:Smith, Morton M. Année(s) de permis:
1979
Résumé:
A continuation of long term measuremen tof duck breeding populations by aerial survey. The data are used in establishing proper management regulations for all residents of North America....
chercheur principal:Smith, Morton M. Année(s) de permis:
1978
Résumé:
A continuation of the annual measurement of duck breeding populations by aerial survey....
chercheur principal:Pace, E.R. Année(s) de permis:
1976
Résumé:
To collect 30 eggs each of Atlantic Brant, King Eider and Old Squaw and 10 eggs or five young Sandhill crane....