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Transcription
C.R. Long
1964
Enderbury Island
July 15, 1964 - A landing was made about 1:30 pm. Camp was set up
in shed and shack. I walked the west shore of the island - very rocky
and the vegetation is not as lush as at Phoenix - at least on this
southwest end. Tropic birds observed nesting under slanting stone slabs.
rocky with patches of sand and gravel sand
*Transect I Digitaria -> Portulaca -> Sida -> Sida ->
Triumfetta Triumfeta Portulaca Boerhaavia Boerhaavia
Digitaria Digitaria
sand and gravel slope darker soil
Boerhaavia Digitaria Lepturus Boerhaavia Sida
Portulaca -> Lepturus -> Boerhaavia -> Portulaca -> Lepturus
Lepturus Portulaca Triumfeta Sesuvium
Boerhaavia Portulaca
Sesuvium -> -> Sesuvium
Eragrostis
edge of lagoon raised islet
salt crust guano soil with much shell material
Observed
Boerhaavia sp. with white flowers and little or no anthocyanin in the exposed
stems. Messerschmidtia argentea (L.f.) Johnston comprises the brush area as
on the chart. This shrub sprouts on the bottom branches and has flowers, the
upper parts appear dead possibly as a result of the high concentration of
nesting lesser frigatebirds (guano concentration on live stems and leaves, and
physical damage as a result of nest building and other avain activities) and/or
the high insolation and continuous drying wind. Red footed boobies are also
found nesting in this "brush".
On the east side of the lagoon - along the edge - were observed several dead
patches of Sesuvium sp. indicating perhaps an earlier high water in the lagoon.
Evaporation must be rapid but not always so rapid as to insure that even Sesuvium
(which has been observed living submerged in salty water) will not be killed back.
Sesuvium forms an uneven cover over guano or gravel surfaces associated with
Lepturus, Portulaca and Sida - at the periphery of the lagoon, on raised dry
heads covered with guano and in the areas just above or in back of the lagoon
edge. On this island the Sesuvium forms no solid mat (uninterrupted). Counted
twenty-four golden plovers.
July 16, 1964 - Plant presses taken out to ship. Dry plants taken from the
presses. Drying conditions in the engine room are not ideal. The humidity is
too high. The best action is to take smaller samples and segregate the succulent
material. On next trip will either have a portable drier or saturate the material
with paraformaldehyde solution and defer drying until we reach Honolulu. This
latter method might also make for a more organized procedure on shipboard - avoiding
the mess and heat of the engine room.
Into the field at 3:30 pm walking north toward the lagoon and then on to
the north end of the island - mapping vegetation and placing permanent markers
(steel poles). North of the old guano ruins a large colony of nesting Greater
Frigates - in dead or weakly sprouting Messerschmidtia (some Cordia sp. also
present). At the edges of the colony some of the birds make their nest on