000			02668nab a22003857a 4500
003			EC-PaCDF
005			20171201142650.0
008			160815t20142014xxu|||||||||||||||||eng||
040			_aEC-PaCDF
041			_aeng
082	0	4	_a579.85 _222
100	1		_aSeddon, Alistair W.
245	1	0	_aDiatoms from isolated islands II: _bPseudostaurosira diablarum, a new species from a mangrove ecosystem in the Galápagos Islands.
520	0		_aIdentifying and describing biodiversity remains fundamental to developing a proper understanding of ecological and biogeographic processes. In this paper, we describe Pseudostaurosira diablarum Seddon & Witkowski sp. nov., a new diatom (Bacillariophyceae) species discovered from Las Diablas wetlands, a brackish water coastal lagoon on the Galápagos Islands. The taxon was observed in both the surface (i.e., extant) and core (i.e., sub-fossil) material from the lagoon, found on shaded mangrove substrata with salinities between 5.2 and 8 g L−1. These observations were confirmed by estimating the salinity tolerances of core samples from the palaeoecological record using a diatom salinity transfer function. We provide light and electron microscope images of P. diablarum sp. nov. Under the light microscope, the best diagnostic features are its lanceolate–elliptical shape, and the striae which are composed of a single row of areolae and do not occur all the way to the apices. Under the scanning/transmission electron microscope, the most distinctive features are the delicate closing plates which are less articulated and branched than in many of the other members of this genus, in addition to the simple, stunted spines which interrupt the striae on the valve margin. The taxon described here constitutes further evidence that the Diablas wetlands are an important site for diatom research, with the potential to provide insights into the processes resulting in the dispersal and evolution of its diatom species.
546			_aEnglish
550			_a2085
653			_aBiogeography.
653			_aBiogeografía,
653			_aBrackish water.
653			_aAgua salobre.
653			_aDiatoms.
653			_aDiatomeas.
653			_aGalápagos Islands.
653			_aIslas Galápagos.
653			_aFragilaria sensu lato.
653			_aPseudostaurosira.
700			_aWitkowski, Andrzej _95559
700			_aFroyd Cynthia A. _92713
700	1		_aKurzydlowski, K.
700	1		_aGrzonka, Justyna
700			_aWillis, Kathy J. _95560
773	0		_tDiatom Research, _gVol. 29, (Feb 2014), p. 201-211.
856	4	0	_uhttp://dx.doi.org/10.1080/0269249X.2013.877084
942			_2ddc _cARTICLE
999			_c12736 _d12736