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Transcription
Long, Charles R.
1964
3
The burrows of Bonin Island Petrels and the light phase wedgetailed
shearwater are common. Also sighted were greater frigatebirds, sooty
terns, brown boobies, masked boobies, ruddy turnstones, bristle-thighed
curlews and wandering tattlers.
The following plant associations were observed:
1. Setaria - Boerhaavia - Tribulus
2. Eragrostis - Sesuvium - Setaria
3. Scaevola
4. Lepidium - Sicyos
September 17, 1964 - Southeast Island
The soil of the pool depression located on the east half of the
island is dark with humus, wet and the parent material is coral sand
and gravel. The Hawaiian monk seal is present with patches of epiphytic
green algae. Turtles are also found on the north shore of the island.
Collections of drift algae and algae in situ on rocks were made. Soil
samples, cytological material of Boerhaavia and Scaevola preserved
materials were secured. On Southeast Island Boerhaavia appears to be a
pioneer on coral gravel bars. Tribulus is associated with Boerhaavia
in these bare areas. Eragrostis is found in bare gravel on the outer
parts of the island as well as on the interior. Seedlings of Sesuvium
were seen in bare soil of the central depression which appear to be
former booby or albatross rest sites.
15. Messerschmidtia - one small plant on the north share of the
east portion of the island on the west portion of the Southeast Island
dead stems of a crucifer were found (to 40 inches in length). No live
plants or seedlings were present. One Casuarina seedling was uprooted.