Genre
- Journal Article
Two sandy beaches were studied in south - central Chile (ca., 39 degrees S), during 17 months to analyze the seasonal variability in population abundances and zonation of the most common species of the intertidal macroinfauna. The beaches displayed differences in mean grain size, Dean's parameter (a composite index of wave and sediment characteristics) and beach face slope. The peracarids Orchestoidea tuberculata Nicolet (Amphipoda, Talitridae), Excirolana braziliensis Richardson and Excirolana hirsuticauda Menzies (Isopoda, Cirolanidae), and the anomuran crab Emerita analoga (Stimpson) (Hippidae) were the most common organisms at both beaches, being E. analoga and E. hirsuticauda the top contributors to abundance. O. tuberculata tended to occur in higher abundance, either during autumn - early winter or late summer - early autumn; E. braziliensis was more abundant during summer - early autumn, while the abundances of E. hirsuticauda and E. analoga were quite erratic throughout seasons. In general, the temporal patterns of abundance did not show significant correlations with the beach physical factors considered. The species showed a clear pattern of zonation: O. tuberculata occurred in the upper beach levels (around the drift line); E. braziliensis occurrred in the mid - upper levels of the retention zone; E. hirsuticauda occurred throughout all the retention zone and also in the upper and middle levels of the resurgence zone, while E. analoga was mostly found in the swash zone and lower levels of the resurgence zone. Although, seasonal changes in the intertidal distribution was observed, it can be seen that each physical zone of the beaches is biologically distinct through seasons.
Jaramillo, E, UNIV CHILE,INST ZOOL,CASILLA 567,VALDIVIA,CHILE.
SANTIAGO; CASILLA 16164, SANTIAGO 9, CHILE
SOCIEDAD BIOLGIA CHILE
PT: J; CR: ANSELL AD, 1972, MAR BIOL, V17, P38 AUBREY DG, 1983, SANDY BEACHES ECOSYS, P63 BEUKEMA JJ, 1982, NETH J SEA RES, V16, P37 BEUKEMA JJ, 1990, EXPECTED EFFECTS CLI, P83 BEUKEMA JJ, 1992, NETH J SEA RES, V30, P73 BRAZEIRO A, 1996, ESTUAR COAST SHELF S, V42, P523 BREWER R, 1979, PRINCIPLES ECOLOGY BROWN AC, 1990, ECOLOGY SANDY SHORES BROWN JH, 1979, ANNU REV ECOL SYST, V10, P201 CHESSON PL, 1986, COMMUNITY ECOLOGY, P240 CLARKE M, 1988, ESTUD OCEANOL, V7, P17 CROKER RA, 1975, CAN J ZOOL, V53, P42 DAHL E, 1952, OIKOS, V4, P1 DIAMOND J, 1986, COMMUNITY ECOLOGY EMERY KO, 1938, J SEDIMENT PETROL, V8, P105 EMERY KO, 1961, LIMNOL OCEANOGR, V6, P90 ESSINK K, 1991, ESTUARIES COASTS SPA, P167 FISH S, 1970, J MAR BIOL ASSOC UK, V50, P753 FLEISCHACK PC, 1989, ESTUAR COAST SHELF S, V28, P517 GIBBS RJ, 1971, J SEDIMENT PETROL, V41, P7 GRANT PR, 1986, COMMUNITY ECOLOGY, P173 JARAMILLO E, 1978, STUDIES NEOTROPICAL, V13, P71 JARAMILLO E, 1982, STUD NEOTROP FAUNA E, V17, P175 JARAMILLO E, 1987, THESIS U NEW HAMPSHI JARAMILLO E, 1987, VIE MILLIEU, V37, P165 JARAMILLO E, 1991, STUD NEOTROP FAUNA E, V26, P193 JARAMILLO E, 1993, ESTUAR COAST SHELF S, V37, P615 JARAMILLO E, 1993, MAR ECOL-PROG SER, V101, P105 JARAMILLO E, 1994, S AFR J ZOOL, V29, P227 JENSEN KT, 1985, J EXP MAR BIOL ECOL, V89, P157 JONES DA, 1970, J ANIM ECOL, V39, P455 LEBER KM, 1982, B MAR SCI, V32, P86 MCLACHLAN A, 1984, MAR ECOL-PROG SER, V16, P51 MCLACHLAN A, 1990, J COASTAL RES, V6, P57 MCLACHLAN A, 1993, J COASTAL RES, V15, P27 MCLUSKY DS, 1975, MAR BIOL, V30, P267 NUNEZ T, 1974, B SOC BIOL CONCEPCIO, V48, P11 OSORIO, 1967, B MUSEO NACL HIST NA, V29, P61 SALVAT B, 1964, CR HEBD ACAD SCI, V256, P1576 SALVAT B, 1966, ACTES SOC LINNEENN A, V1, P103 SANCHEZ M, 1982, STUD NEOTROP FAUNA E, V17, P31 SEWARDTHOMPSON B, 1973, SEDIMENTOLOGY, V11, P83 SHORT AD, 1983, SANDY BEACHES ECOSYS, P133 SWART DH, 1983, SANDY BEACHES ECOSYS, P5 WIENS JA, 1986, COMMUNITY ECOLOGY, P154; NR: 45; TC: 8; J9: REV CHIL HIST NAT; PG: 13; GA: WR251
Source type: Electronic(1)
Language
- English
Subjects
- RANGE
- MACROINFAUNA
- south-central
- PATTERNS
- temporal variability
- WADDEN SEA
- BENTHOS
- ecology
- ISOPODS
- SANDY BEACHES
- Biodiversity Conservation
- MACROFAUNA
- COMMUNITY
- ZONATION
- Chile