Résultats de la recherche

1. Field Identification Guide to Heard Island and McDonald Island Benthic Invertebrates

   physical and biological environments is provided in Meyer et al. (2000). Human activities in the region ... this, Meyer et al. (2000) reported on the status of information pertaining to the conservation values ... benthic invertebrates in the HIMI region used by Meyer et al. (2000) was primarily qualitative, obtained ... to further the understanding of the conservation values identifi ed by Meyer et al. (2000), and to ...

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2. Whale depredation – Data collection guidelines

   ”, causing losses of tens of millions dollars to the fishing industry annually (Tixier et al. 2010). s ... (Tixier et al. 2010). s. Depredation can also have negative impacts on the conservation of recovering ...

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3. Zooplankton: Trophic modelling of the Ross Sea

   et al. 1991; Brinton et al. 2000; Azzali & Kalinowski, 2000; Sala et al. 2002; Azzali et al. 2006 ... ), and in the eastern parts (Ackley et al. 2003). Distribution information (Azzali et al. 2006; Ackley ... et al. 2003) suggests that the seaward distribution of this species ends at the shelf break. In the ... . During winter (from April at least until August) growth slows (Kirkwood 1996; Nicol et al. 2004 ...

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4. Bacteria and detritus: Trophic modelling of the Ross Sea

   feed largely on bacteria (Moodley et al. 2002; Josefson et al. 2002). There is evidence, though, that ... detritus in sediments (Kemp 1990; Fabiano et al. 2000b). Here, we assume that a nominal 25% of detrivorous ... given in a number of papers by Ducklow (Ducklow 1999; Ducklow et al. 2000, 2001; Monticelli et al. 2003 ... . Measurements from Ducklow et al. (2001) give an effective depth of bacteria (the ratio of water column ...

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5. Sea Ice Biota: Trophic modelling of the Ross Sea

   sea birds and mammals (Ackley et al. 2003), while at the same time, the ice itself, especially the ... of P. borchgrevinki were copepods and their nauplii (Hoshiai et al. 1987a). Also sea ice appears to ... birds (Kaufmann et al. 1995). Krill are also known to be attracted to the concentrations of food ... development of a microalgal bloom of cells >20 um (Giesenhagen et al. 1999). Primary and bacterial production ...

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6. Benthos: Trophic modelling of the Ross Sea

   ; Littlepage & Pearse 1967; Bullivant & Dearborn 1967; Bullivant 1967a, b; Dayton & Oliver 1977; Lipps et al ... . 1979; Battershill 1989; review by Starmans et al. 1999; Gambi & Bussotti 1999; Barry et al. 2003; Rehm ... et al. 2006), large-scale estimates of benthic biomass in the Ross Sea is limited. Sampling methods ... below (e.g., Arntz et al. 1997).  There are distinct differences between various benthic subsystems ...

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7. Fishes: Trophic modelling of the Ross Sea

   . antarcticum adults (La Mesa et al. 2004b), and a continental slope fauna dominated by macrourids, rajiids ... sporadic (e.g., Iwami & Abe 1981; Eastman & Hubold 1999; Mitchell & Clark 2004; Donnelly et al. 2004 ... ). Sampling has mainly been focused on the collection of specimens (Eastman & Hubold 1999; Donnelly et al ... 2004 (Mitchell & Clark 2004) and “CAML-IPY” 2008 (Hanchet et al. 2008 b) have considerably improved ...

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8. Birds: Trophic modelling of the Ross Sea

   study area, and in adjacent regions (Table 1: Harper et al. 1984, Ainley et al. 1984). Birds in the ... observation of Ainley et al. (1984) that many birds found in the study area in summer were not breeding, we ... there is an allometric relationship between weight and P/B as given by Brown et al. (2004), so that P ... the impacts of fishing on marine birds are not systematically observed (Tasker et al. 2000; Taylor ...

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9. Phytoplankton: Trophic modelling of the Ross Sea

   as 180 gC m-2 y-1 with average sedimentation rates up to 97% (Fabiano et al. 1997, Saggiomo et al ... . 2000; Smith et al. 1996; Heilmayer et al. 2003). Growth of phytoplankton in the Ross Sea is ... exhausted in the Ross Sea (see: Lancelot et al. 2000; Arrigo et al. 2003 and references therein). It ... concentrations in late spring and early summer (Sedwick et al. 2000). Light is hence the primary limiting ...

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10. Seals: Trophic modelling of the Ross Sea

    Antarctic seals (e.g. Arnould et al. 1996). This work, conducted on Antarctic fur seals, shows that ash ... areas (e.g., Siniff et al. 1980; Testa & Siniff 1987; Schreer & Testa 1992). A basic review of ... (Shirihai 2002; Laws et al. 2003). Crabeater seal neonates are at least 1.1 m and about 36 (20–40) kg in ... along the western Antarctic Peninsula, they foraged between 6 and 713 m (Burns et al. 2004). Crabeaters ...

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