Observations on the occurrence and behaviour of minke whales off the coast of Brazil

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888 E. Biological Oceanography OLR (1984) 31 (12) separate population could be decimated. Nat. En- viron. Res. Council, c/o British Antarctic Survey, Madingley Rd., Cambridge, UK. (ahm) 84:6212 O'Riordan, C.E., J.M.C. Holmes and D.P. Sleeman, 1984. First recorded occurrence of the hawksbill turtle (Eretmochelys imbricata L.) in Irish waters. Ir. Nat. J., 21(6):274-275. Natl. Museum of Ireland, Dublin 2, Ireland. 84:6213 Singarajah, K.V., 1984. Observations on the occur- rence and hehaviour of minke whales off the coast of Brazil. Scient. Repts Whales Res. Inst., 35:17- 38. Balaenoptera acutorostrata physiology, morphology and catch statistics 1963-82 are discussed as are the Brazilian whaling ground's topography and hy- drography. Prior to 1963, only 3 minke whales had been taken; since then, 12,494 have been taken. The 'population appears to remain at an exploitable level.' The minke's arrival off Brazil seems related to optimal water temperature, reduced turbulence, and appropriate day-length and surface currents. Dept. of Syst. and Ecol., CCEN, Federal Univ. of Paraiba, Joao Pessoa 58000, Brazil. (ihz) Ell0. Bottom communities 84:6214 Ambrose, W.G. Jr., 1984. Role of predatory infauna in structuring marine soft--bottom communities. Mar. Ecol.-Prog. Ser., 17(2):109-115. The use of cages to exclude epibenthic predators from muddy-sand and seagrass habitats resulted in an increase in predatory infauna. Possible mecha- nisms and interactions are discussed. Predatory and non-predatory infauna should be treated as separate entities in models of soft-bottom community struc- ture. Inst. of Mar. Biol. and Limnol., Univ. of Osto, Norway. (mjj) 84:6215 Harris, L.G., A.W. Ebeling, D.R. Laur and R.J. Rowley, 1984. Community recovery niter storm damage: a case of facilitation in primary succes- sion. Science, 224(4655): 1336-1338. After a California marine reef was denuded by a severe storm, 'early arriving, fast-growing algae' provided dense cover which sheltered young kelp from excessive grazing by fish. This may be the first example of 'refuge facilitation [occurring] in primary succession after a major natural disturbance.' Dept. of Zool., Univ. of New Hampshire, Durham, N.H. 03824, USA. (mjj) 84:6216 Kelly, J.R. and S.W. Nixon, 1984. Experimental studies of the effect of organic deposition on the metabolism of a coastal marine bottom commu- nity. Mar. Ecol.-Prog. Ser., 17(2):157-169. Addition of particulate organic matter to the water column overlying intact sediment cores maintained in the laboratory resulted in large changes in rates of sediment 02 uptake and CO 2 and NH 4 release. Quantities of organic matter added and timing of the additions affected the variability of sediment-water exchanges. Extrapolation of results to sediments of Narragansett Bay, Rhode Island, indicates that '>80% of the annual C and N deposition may be remineralized.' Ecosystems Res. Center, 237 Corson Hall, Cornell Univ., Ithaca, NY 14853, USA. (mjj) 84:6217 Logan, A., F.H. Page and M.L.H. Thomas, 1984. Depth zonation of epibenthos on sublittorai hard substrates off Deer Island, Bay of Fundy, Canada. Estuar. coast. Shelf Sci., 18(5):571-592. Dept. of Geol., Univ. of New Brunswick, St. John, NB, Canada. 84:6218 Lubchenco, Jane et al., 1984. Structure, persistence, and role of consumers in a tropical rocky intertidal community (TaboguiHa Island, Bay of Panama). J. expl mar. Biol. Ecol., 78(1/2):23-73. The physical environment and i~s seasonal changes are described; zonation, abundance and diversity of plants and animals are examined. The upper zone is barren, but mid- and low zones are dominated by encrusting algae (<92% cover). Foliose algae are rare (_<7% cover), as are sessile animals. Mobile consumers (limpets, gastropods, crabs, chitons, fish) are abundant and are an important factor in maintaining the low abundance of sessile inverte- brates and dominance of encrusting algae. Seasonal changes in community structure are small. Dept. of Zool., Oregon State Univ., Corvallis, Oreg. 97331, USA. (mjj) 84:6219 Parulekar, A.H., Z.A. Ansari and S.N. Harkantra, 1983. Benthic fauna of the Antarctic Oceanm quantitative ~Oects. In: Scientific Report of First Indian Expedition to Antarctica. Technical Pub- lication No. 1; Department of Ocean Devel- opment, New Delhi, India; pp. 213-218.

Transcript of Observations on the occurrence and behaviour of minke whales off the coast of Brazil

Page 1: Observations on the occurrence and behaviour of minke whales off the coast of Brazil

888 E. Biological Oceanography OLR (1984) 31 (12)

separate population could be decimated. Nat. En- viron. Res. Council, c /o British Antarctic Survey, Madingley Rd., Cambridge, UK. (ahm)

84:6212 O'Riordan, C.E., J.M.C. Holmes and D.P. Sleeman,

1984. First recorded occurrence of the hawksbill turtle (Eretmochelys imbricata L.) in Irish waters. Ir. Nat. J., 21(6):274-275. Natl. Museum of Ireland, Dublin 2, Ireland.

84:6213 Singarajah, K.V., 1984. Observations on the occur-

rence and hehaviour of minke whales off the coast of Brazil. Scient. Repts Whales Res. Inst., 35:17- 38.

Balaenoptera acutorostrata physiology, morphology and catch statistics 1963-82 are discussed as are the Brazilian whaling ground's topography and hy- drography. Prior to 1963, only 3 minke whales had been taken; since then, 12,494 have been taken. The 'population appears to remain at an exploitable level.' The minke's arrival off Brazil seems related to optimal water temperature, reduced turbulence, and appropriate day-length and surface currents. Dept. of Syst. and Ecol., CCEN, Federal Univ. of Paraiba, Joao Pessoa 58000, Brazil. (ihz)

Ell0. Bottom communities

84:6214 Ambrose, W.G. Jr., 1984. Role of predatory infauna

in structuring marine soft--bottom communities. Mar. Ecol.-Prog. Ser., 17(2):109-115.

The use of cages to exclude epibenthic predators from muddy-sand and seagrass habitats resulted in an increase in predatory infauna. Possible mecha- nisms and interactions are discussed. Predatory and non-predatory infauna should be treated as separate entities in models of soft-bottom community struc- ture. Inst. of Mar. Biol. and Limnol., Univ. of Osto, Norway. (mjj)

84:6215 Harris, L.G., A.W. Ebeling, D.R. Laur and R.J.

Rowley, 1984. Community recovery niter storm damage: a case of facilitation in primary succes- sion. Science, 224(4655): 1336-1338.

After a California marine reef was denuded by a severe storm, 'early arriving, fast-growing algae' provided dense cover which sheltered young kelp from excessive grazing by fish. This may be the first example of 'refuge facilitation [occurring] in primary

succession after a major natural disturbance.' Dept. of Zool., Univ. of New Hampshire, Durham, N.H. 03824, USA. (mjj)

84:6216 Kelly, J.R. and S.W. Nixon, 1984. Experimental

studies of the effect of organic deposition on the metabolism of a coastal marine bottom commu- nity. Mar. Ecol.-Prog. Ser., 17(2):157-169.

Addition of particulate organic matter to the water column overlying intact sediment cores maintained in the laboratory resulted in large changes in rates of sediment 02 uptake and CO 2 and NH 4 release. Quantities of organic matter added and timing of the additions affected the variability of sediment-water exchanges. Extrapolation of results to sediments of Narragansett Bay, Rhode Island, indicates that '>80% of the annual C and N deposition may be remineralized.' Ecosystems Res. Center, 237 Corson Hall, Cornell Univ., Ithaca, NY 14853, USA. (mjj)

84:6217 Logan, A., F.H. Page and M.L.H. Thomas, 1984.

Depth zonation of epibenthos on sublittorai hard substrates off Deer Island, Bay of Fundy, Canada. Estuar. coast. Shelf Sci., 18(5):571-592. Dept. of Geol., Univ. of New Brunswick, St. John, NB, Canada.

84:6218 Lubchenco, Jane et al., 1984. Structure, persistence,

and role of consumers in a tropical rocky intertidal community (TaboguiHa Island, Bay of Panama). J. expl mar. Biol. Ecol., 78(1/2):23-73.

The physical environment and i~s seasonal changes are described; zonation, abundance and diversity of plants and animals are examined. The upper zone is barren, but mid- and low zones are dominated by encrusting algae (<92% cover). Foliose algae are rare (_<7% cover), as are sessile animals. Mobile consumers (limpets, gastropods, crabs, chitons, fish) are abundant and are an important factor in maintaining the low abundance of sessile inverte- brates and dominance of encrusting algae. Seasonal changes in community structure are small. Dept. of Zool., Oregon State Univ., Corvallis, Oreg. 97331, USA. (mjj)

84:6219 Parulekar, A.H., Z.A. Ansari and S.N. Harkantra,

1983. Benthic fauna of the Antarctic Oceanm quantitative ~Oects. In: Scientific Report of First Indian Expedition to Antarctica. Technical Pub- lication No. 1; Department of Ocean Devel- opment, New Delhi, India; pp. 213-218.