Recursos de colección

Hokkaido University Collection of Scholarly and Academic Papers (130.615 recursos)

HUSCAP (Hokkaido University Collection of Scholarly and Academic Papers) contains peer-reviewed journal articles, proceedings, educational resources and any kind of scholarly works of Hokkaido University.

Vol. 53, No. 2

Mostrando recursos 1 - 5 de 5

  1. 地球温暖化による海洋生態系の変化

    岸, 道郎
    Marine ecosystem especially fish ecology in the sub-arctic ocean must be changed due to global warming. In this manuscript,the introduction of marine food web will be discussed and based on this discussions, we guess what will happen on marine food web due to global warming based on simulation results by physical ecological coupled model.
    - 21-oct-2017

  2. 気候変化と海鳥の繁殖タイミングおよび生産

    綿貫, 豊
    Timing of breeding in terrestrial birds has been progressed with the global warming trend during recent decades. This paper reviewed the inter-annual trends of the timing of breeding in seabirds and potential mechanisms driving these changes. Their timing of breeding was progressed in 3 of 4 cases in the Arctic at the rates of 0.3-1.5 d/year, but it was delayed in 6 of 10 cases in the Antarctic at slower rates (<0.1 d/year). In cooltemperate areas, timing of seabird’s breeding tended to delay in western Atlantic, progressed in Canadian Pacific, but no significant trends were observed in California coast and...
    - 21-oct-2017

  3. 親潮域における動物プランクトン研究の最近の進歩

    山口, 篤
    Recent advances in studies on zooplankton ecology in the Oyashio region were reviewed. In this review, the following three topics were argued : i) ecosystem structure in the region, ii) inter-annual changes in zooplankton biomass and iii) optical analysis on zooplankton samples. Annual mean biomass in the Oyashio region was estimated to be 23 g C m-2 and was dominated by mesozooplankton (34%), followed by phytoplankton (28%), heterotrophic bacteria (15%) and microzooplankton (14%). Within the mesozooplankton, large grazing copepods (i.e. Neocalanus spp., Eucalanus bungii and Metridia spp.) were the most important taxa to govern the seasonal and inter-annual variability. Through...
    - 21-oct-2017

  4. 気候変化と対馬暖流の物理過程

    磯田, 豊
    It has been considered that primary driving force of the Tsushima Warm Current (TWC) is the net pressure difference between the south and north straits, i.e., inflow-outflow dynamical process. On the other hand, the most intriguing aspect of surface circulation in the Japan Sea is the tremendous contrast between the incoming, TWC water and the cold water north of the polar front. So, the theory developed for inflow-outflow dynamics should be modified to include the thermo-dynamical process. To start a discussion for dynamics, we need to briefly review the scale of TWC system in space and in time. Next, I...
    - 21-oct-2017

  5. 気候変化と人間活動に応答する海洋生態系の歴史的変遷と将来予測

    岸, 道郎
    - 21-oct-2017

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