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Titolo:
COMPARATIVE SENSITIVITY OF 5 SPECIES OF MACROPHYTES AND 6 SPECIES OF ALGAE TO ATRAZINE, METRIBUZIN, ALACHLOR, AND METOLACHLOR
Autore:
FAIRCHILD JF; RUESSLER DS; CARLSON AR;
Indirizzi:
US GEOL SURVEY,ENVIRONM & CONTAMINANTS RES CTR,4200 NEW HAVEN RD COLUMBIA MO 65201 US GEOL SURVEY,FLORIDA CARIBBEAN SCI CTR GAINESVILLE FL 32653 US EPA,NATL HLTH & ENVIRONM EFFECTS RES LAB,MIDCONTINENT ECOL DIV DULUTH MN 55804
Titolo Testata:
Environmental toxicology and chemistry
fascicolo: 9, volume: 17, anno: 1998,
pagine: 1830 - 1834
SICI:
0730-7268(1998)17:9<1830:CSO5SO>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELENASTRUM-CAPRICORNUTUM; VASCULAR PLANTS; HERBICIDES; EFFLUENT; TOXICITY; LEMNA;
Keywords:
HERBICIDES; TOXICITY; ALGAE; MACROPHYTES; AQUATIC PLANTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
J.F. Fairchild et al., "COMPARATIVE SENSITIVITY OF 5 SPECIES OF MACROPHYTES AND 6 SPECIES OF ALGAE TO ATRAZINE, METRIBUZIN, ALACHLOR, AND METOLACHLOR", Environmental toxicology and chemistry, 17(9), 1998, pp. 1830-1834

Abstract

This study determined the relative sensitivity of five species of aquatic macrophytes and six species of algae to four commonly used herbicides (atrazine, metribuzin, alachlor, and metolachlor). Toxicity testsconsisted of 96-h (duckweed and algae) or 14-d (submerged macrophytes) static exposures. The triazine herbicides (atrazine and metribuzin) were significantly more toxic to aquatic plants than were the acetanilide herbicides (alachlor and metolachlor). Toxicity studies ranked metribuzin > atrazine > alachlor > metolachlor in decreasing order of overall toxicity to aquatic plants. Relative sensitivities of macrophytesto these herbicides decreased in the order of Ceratophyllum > Najas >Elodea > Lemna > Myriophyllum. Relative sensitivities of algae to herbicides decreased in the order of Selenastrum > Chlorella > Chlamydomonas > Microcystis, Scenedesmus > Anabaena. Algae and macrophytes were of similar overall sensitivities to herbicides. Data indicated that Selenastrum, a commonly tested green alga, was generally more sensitive compared to other plant species. Lemna minor; a commonly tested floating vascular plant, was of intermediate sensitivity, and was fivefold less sensitive than Ceratophyllum, which was the most sensitive speciestested. The results indicated that no species was consistently most sensitive, and th;at a suits of aquatic plant test species may be needed to perform accurate risk assessments of herbicides.

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Documento generato il 20/09/20 alle ore 09:51:38