Bryophyte flora was investigated in Enkaizan forest, the southern part of Yokohama, enumerating 214 spp. in total; 149 species in 55 genera of 31 families of Musci, 60 species in 33 genera of 24 families of Hepaticae and 5 species in 4 genera of 2 families of Anthoceratae. Among them, 30 spp. were new to Kanagawa Prefecture. Yokohama became the new northernmost locality for Ectropothecium zollingeri, Pallavicinia levieri and Riccardia flavovirens.

View full abstract

The spread of an alien Formosan squirrel (Callosciurus erythraeus thaiwanensis) in Kanagawa Prefecture is expected to give serious impacts on the native species, especially for the Japanese squirrel. To estimate the further expansion and to find the clue of control, the vegetation types selected by the Formosan squirrels were investigated in Yokohama Nature Sanctuary, Yokohama City, Kanagawa Prefecture including various types of vegetation. Six radio-tracked individuals selectively used the area including broad-leaved evergreen trees, but Japanese cedar plantations and shrubs were also used in case the broad-leaved evergreen trees were insufficient within their home ranges. The selected patches by each individual tended to have more number of large evergreen trees and more number of tree species. Forest treatment such as weeding and thinning in plantation and urban remnant forests may be effective to decrease habitable sites of the Formosan squirrel.

View full abstract

Fish fauna in the coasts of Yokohama, Kawasaki and Nakanose areas in Tokyo Bay were researched and over 300 species has hitherto been recorded from the areas. In the recent survey 10 species are newly recorded from the areas from November 1998 to October 2004. Especially, the following 4 species are the first records from Tokyo Bay: Exocoetes monocirrhus, Parexocoetus brachypterus brachypterus, Parapercis ommatura, Macrorhamphosodes uradoi.

View full abstract

Fish fauna along the coast of southwestern area of the Miura Peninsula were researched and 425 species has hitherto been recorded from the area since 1988. In the recent survey 25 species are newly recorded from the area from November 2002 to October 2004. Especially, the following 3 species are the first records from Sagami Bay: Cheilodipterus macrodon, Abudefduf septemfasciatus, Eleutherochir opercularis.

View full abstract

Ichthyofauna of Sagami Bay has been researched by landing fishes of Misaki Fish Market, and 558 species has been recorded since 1986. In the present paper, six species are additionally recorded. Naso lopezi, Gerres filamentosus and Lagocephalus inermis are of rare occurrence in the Bay.

View full abstract