Insecticides as a factor in the mortality of the Sandwich Tern (Sterna sandvicensis). A preliminary communication
Koeman, J.H.; Oskamp, A.A.G.; Veen, J.; Brouwer, E.; Rooth, J.; Zwart, P.; van den Broek, E.; Van Genderen, H. (1967). Insecticides as a factor in the mortality of the Sandwich Tern (Sterna sandvicensis). A preliminary communication. Meded. Rijksfac. Landbouwwet. Gent 32: 841-854
In: Mededelingen van de Rijksfaculteit Landbouwwetenschappen te Gent. Rijksfaculteit Landbouwwetenschappen: Gent. ISSN 0369-1721, more
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| Authors | | Top |
- Koeman, J.H.
- Oskamp, A.A.G.
- Veen, J.
- Brouwer, E.
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- Rooth, J.
- Zwart, P.
- van den Broek, E.
- Van Genderen, H.
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| Abstract |
In a preliminary survey considerable amounts of chlorinated hydrocarbon insecticides were detected in several sea bird species in the Netherlands. To evaluate the probable toxicological implications of the residues found a special study was made of the sandwich tern during the summers of 1965 and 1966. From the results we conclude that in 1965 insecticides were responsible for the mortality observed among adult and juvenile birds in the colony. It is considered that the decline in the Netherlands' population of this bird is due to poisoning from these insecticides. An account is given of the dispersion of these compounds in the coastal environment in the Netherlands from analysis of indicator organisms. |
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