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Aquatic macroinvertebrate communities of natural and ditched potholes in a San Francisco Bay salt marsh
OLR (1985)32 (12)
E. BiologicalOceanography
tosyntbesis in Lake Grevelingen (SW Netherlands). Neth. J. Sea Res., 18(3-4):260-272.
Annual excretion for 1978 was 9.8 g C / m 2 or 7% of total primary production. A linear correlation was seen between excretion and primary production. Possible artifacts of the method are discussed. Delta Inst. for Hydrobiol. Res., Vierstraat 28, 4401 EA, Netherlands. (mwf)
E90. Sargassum and symbionts (also similar communities) 85:7228 Kingsford, M.J. and J.H. Choat, 1985. The fauna associated with drift algae captured with a plankton-mesh purse seine net. Limnol. Oceanogr., 30(3):618-630. Densities of small fish and invertebrates were higher in association with drift algae than in open water; fauna differed from that of attached algae. Large numbers of epiphytic animals vacated attached algae which were experimentally detached; fauna on drift algae, therefore, is largely the result of colonization from open water. Drifting algae may quickly influence the distribution of animals in open water. Appreciable quantities of drift algae may influence the survivorship and recruitment processes of species which associate with algae during the planktonic phase of their life cycles. Choat: Dept. of Zool., Univ. of Auckland Mar. Lab., R.D. Leigh, New Zealand.
El00. Nekton
( c o m m u n i t i e s ; also fish, reptiles, m a m m a l s )
85:7229 Miller, R.V., J.H. Johnson and N.V. Doroshenko, 1985. Gray whales (Eschrichtius robustus) in the western Chukchi and East Siberian seas. A retie, 38(1):58-60. Gray whales were observed well offshore in ice-free water in 1979, but near the Chukotka coast in 1980 and further west than previously recorded, with three animals seen at 174°08"E longitude, well into the East Siberian Sea. Based on indirect evidence of gray whale behavior and typical prey organisms, it is assumed that gray whales are feeding in the western Chukchi Sea during summer and fall. Movement into the East Siberian Sea may occur regularly when ice conditions permit, but it may also be a response to increasing population size over the past several
1041
decades, and gray whales may be reoccupying habitat unused during periods of low population caused by commercial whaling. Natl. Mar. Mammal Lab., NWAFC, 7600 Sand Point Way N.E., Seattle, WA 98115, USA. 85:7230 Richardson, W.J., M.A. Fraker, Bernd Wtirsig and R.S. Wells, 1985. Behaviour of bowhead whales Balaena mysticetus summering in the Beaufort Sea: reactions to industrial activities. Biol. Conserv., 32(3):195-230. LGL Ltd., Environ. Res. Assoc., 22 Fisher St., POB 457, King City, ON LOG I K0, Canada. 85:7231 Torres N., Daniel, Carlos Guerra C. and J.C. Cardenas, 1984. [Arctocephalus gazella, Arctoeephalus tropicalis and Leptouychotes weddelli in the Juan FernAndez Archipelago.I Inst. Antart. Chil. Ser. cient., 31:115-148. (In Spanish, English abstract.) Subdir. Cient., Inst. Antartico Chileno, Luis Thayer Ojeda 814, Santiago, Chile.
Ell0. Bottom communities 85:7232 Alongi, D.M., 1985. Microbes, meiofauna, and bacterial productivity on tubes constructed by the polychaete Capiteila capitata. Mar. Ecol.-Prog. Set., 23(2):207-208. Protozoa densities and bacterial production were significantly higher on tubes than in equivalent volumes of sediment taken adjacent to the tubes; bacterial densities on tubes and in sediments were not significantly different. Total meiofauna densities were significantly higher in controls due to the absence of nematodes on the tubes. This work suggests that sediment tubes constructed by C. capitata are sites of enhanced bacterial activity caused, in part, by protozoans grazing on bacteria. Australian Inst. of Mar. Sci., PMP No. 3, Townsville M.C., Qld. 4810, Australia. 85:7233 Barnby, M.A., J.N. Collins and V.H. Resh, 1985. Aquatic macroinvertebrate communities of natural and ditched potholes in a San Francisco Bay salt marsh. Estuar. coast. Shelf Sci., 20(3):331347. Div. of Entomol. and Parasitol., Univ. of Calif., Berkeley, CA 94720, USA. 85:7234 Gaines, S. and J. Roughgarden, 1985, Larval settlement rate: a leading determinant of structure in
E. BiologicalOceanography
tosyntbesis in Lake Grevelingen (SW Netherlands). Neth. J. Sea Res., 18(3-4):260-272.
Annual excretion for 1978 was 9.8 g C / m 2 or 7% of total primary production. A linear correlation was seen between excretion and primary production. Possible artifacts of the method are discussed. Delta Inst. for Hydrobiol. Res., Vierstraat 28, 4401 EA, Netherlands. (mwf)
E90. Sargassum and symbionts (also similar communities) 85:7228 Kingsford, M.J. and J.H. Choat, 1985. The fauna associated with drift algae captured with a plankton-mesh purse seine net. Limnol. Oceanogr., 30(3):618-630. Densities of small fish and invertebrates were higher in association with drift algae than in open water; fauna differed from that of attached algae. Large numbers of epiphytic animals vacated attached algae which were experimentally detached; fauna on drift algae, therefore, is largely the result of colonization from open water. Drifting algae may quickly influence the distribution of animals in open water. Appreciable quantities of drift algae may influence the survivorship and recruitment processes of species which associate with algae during the planktonic phase of their life cycles. Choat: Dept. of Zool., Univ. of Auckland Mar. Lab., R.D. Leigh, New Zealand.
El00. Nekton
( c o m m u n i t i e s ; also fish, reptiles, m a m m a l s )
85:7229 Miller, R.V., J.H. Johnson and N.V. Doroshenko, 1985. Gray whales (Eschrichtius robustus) in the western Chukchi and East Siberian seas. A retie, 38(1):58-60. Gray whales were observed well offshore in ice-free water in 1979, but near the Chukotka coast in 1980 and further west than previously recorded, with three animals seen at 174°08"E longitude, well into the East Siberian Sea. Based on indirect evidence of gray whale behavior and typical prey organisms, it is assumed that gray whales are feeding in the western Chukchi Sea during summer and fall. Movement into the East Siberian Sea may occur regularly when ice conditions permit, but it may also be a response to increasing population size over the past several
1041
decades, and gray whales may be reoccupying habitat unused during periods of low population caused by commercial whaling. Natl. Mar. Mammal Lab., NWAFC, 7600 Sand Point Way N.E., Seattle, WA 98115, USA. 85:7230 Richardson, W.J., M.A. Fraker, Bernd Wtirsig and R.S. Wells, 1985. Behaviour of bowhead whales Balaena mysticetus summering in the Beaufort Sea: reactions to industrial activities. Biol. Conserv., 32(3):195-230. LGL Ltd., Environ. Res. Assoc., 22 Fisher St., POB 457, King City, ON LOG I K0, Canada. 85:7231 Torres N., Daniel, Carlos Guerra C. and J.C. Cardenas, 1984. [Arctocephalus gazella, Arctoeephalus tropicalis and Leptouychotes weddelli in the Juan FernAndez Archipelago.I Inst. Antart. Chil. Ser. cient., 31:115-148. (In Spanish, English abstract.) Subdir. Cient., Inst. Antartico Chileno, Luis Thayer Ojeda 814, Santiago, Chile.
Ell0. Bottom communities 85:7232 Alongi, D.M., 1985. Microbes, meiofauna, and bacterial productivity on tubes constructed by the polychaete Capiteila capitata. Mar. Ecol.-Prog. Set., 23(2):207-208. Protozoa densities and bacterial production were significantly higher on tubes than in equivalent volumes of sediment taken adjacent to the tubes; bacterial densities on tubes and in sediments were not significantly different. Total meiofauna densities were significantly higher in controls due to the absence of nematodes on the tubes. This work suggests that sediment tubes constructed by C. capitata are sites of enhanced bacterial activity caused, in part, by protozoans grazing on bacteria. Australian Inst. of Mar. Sci., PMP No. 3, Townsville M.C., Qld. 4810, Australia. 85:7233 Barnby, M.A., J.N. Collins and V.H. Resh, 1985. Aquatic macroinvertebrate communities of natural and ditched potholes in a San Francisco Bay salt marsh. Estuar. coast. Shelf Sci., 20(3):331347. Div. of Entomol. and Parasitol., Univ. of Calif., Berkeley, CA 94720, USA. 85:7234 Gaines, S. and J. Roughgarden, 1985, Larval settlement rate: a leading determinant of structure in