Micronesia covers 7,4 million km² with some 2,100 islands and atolls. In the early 20th century, naturalists had collected algae and seagrasses from only a few islands and atolls across this vast region. In the 1960s, Roy Tsuda —graduate student—set out to change that. Over the following decades he published >60 papers on the marine macrophytes of Micronesia and another 30 covering parts of Polynesia and the central Pacific, southern Japan/Ryukyus, the Philippines and elsewhere. Some 185 genera and 653 species of benthic marine algae and seagrasses were recognized for Micronesia, including about 60 new species. By the end of his life he added another 30 publications detailing biogeographic distributions throughout Micronesia and parts of northern Polynesia.

This paper adds 25 new records to the Guam flora and corrects some earlier identifications, bringing the total number of identified taxa to 378, and provides a reference list of species added in taxonomic papers since the last records paper in 2015, nomenclatural updates on the species and higher taxa recorded in earlier reports, and a list of slides of Guam samples deposited in U.S. diatom herbaria. Of particular interest are: Campylodiscus robertsianus; Amphora subhyalina, which we show to have priority over A. insulana; Coscinodiscus hauckii, which we show to have no perforations in the central zone, nor rimoportulae; understudied species including Biremis ridicula, Mastogloia cf. pisciculus, Nitzschia cf. jelinecki, and genera including Vikingea and Dictyoneis. We describe Dictyoneis apapae sp. nov., a lanceolate species distinguished from the panduriform species by the external pattern of pseudoloculi and valve shape.

Abstract— This paper explores how indigenous plant names have been referenced in the botanical literature. There are two species of trees in the Mariana Islands known in the indigenous language Chamoru as katot, a word referencing their irritating hairs and bark, Dendrocnide latifolia (Gaudich.) Chew (Urticaceae) and Claoxylon marianum Muell.Arg. (Euphorbiaceae). At least some speakers additionally distinguish between the two species, respectively, via the terms katot palao'an (“female katot”) and katot låhi, (“male katot”). The latter species, C. marianum and at least one unidentified species has also been recorded in the literature as panao, an untranslatable term with many Austronesian cognates that is also applied to another tree Guettarda speciosa L. (Rubiaceae). Despite its early provenance, this name's application to C. marianum appears in error and in the Marianas the name panao (or pånao) has likely only referred to G. speciosa just as it does today.

 

Sumåria— Guini, hu tattiyi dos na nå'an tinanom fino' håya gi amko' na tinigi' fino' lågu siha. Guaha dos na klåsen tronku mafana'an katot sa' pápago' siha annai ma pacha': Dendrocnide latifolia (Gaudich.) Chew (Urticaceae) yan Claoxylon marianum Muell.Arg. (Euphorbiaceae). Para distengge ma usa palu taotao i na'an siha katot palao'an yan katot låhi. I mina'dos na tronku C. marianum mafana'an panao gi lepblo siha kumu unu pat dos mås na tronku, lokkue': Guettarda speciosa L. (Rubiaceae) yan puedi otru na klåsi ni ma tugi' na maolek para maderas yan tåpbla lao ti ma tungo' i na'an gi fino' lågu. Yanggen G. speciosa i klåsen tronku ni ti ma tungo', guse'ña este ha' na tronku gi iya Mariånas ni mafana'an panao pat pånao åntes di i tiempon Españót esta på'go.

The accidental introduction of the Brown Treesnake (BTS, Boiga irregularis) to Guam following World War II led to the extinction, extirpation, or severe decline of most of Guam’s native avifauna. One forest bird species that managed to persist is the cavity-nesting Såli (Micronesian Starling, Aplonis opaca guami), a once-ubiquitous native omnivore whose current Guam distribution is restricted primarily to urbanized areas in the northern half of the island, with a second much smaller population on Cocos Island off southern Guam. Såli on Guam breed year-round and are habitat generalists with large home ranges. Besides arthropods and small vertebrates, they consume fruit from a wide range of native and introduced plant species and are key seed dispersers within the local ecosystem. Såli on Guam suffer extremely high post-fledging mortality due to predation by BTS and cats, leading to a population age structure strongly skewed towards adult birds. Other threats include habitat loss and degradation, extreme weather events, and sea level rise. Key management activities aimed at restoring this species include predator control, while non-native ungulate removal and vegetation management may be undertaken to support broader ecological recovery. This species account on Såli provides a review of the literature on this species, synthesizing information on habitat use, life history, and demographics to provide a biological foundation for future recovery efforts.