L'analyse de l'ADN du spécimen lectotype d'Ulva nematoidea Bory (Ulvaceae, Chlorophyta) détermine sa synonymie avec Ulva lactuca L. est une espèce actuellement acceptée répartie dans le sud-est l'océan Pacifique, Mexique au Chili. Son identité reste cependant inconnue car aucune séquence d'ADN n'a été obtenue à partir type. Pour déterminer son et statut taxonomique, nous avons effectué un séque...

Mono Lake in eastern California has the highest natural boron concentrations measured a water body. Inputs to are from creeks that drain Sierra Nevada, accounting for over 80% of total input, and springs account most rest budget. We isotope compositions sources lake collected several seasons. The δ11B offset at least +2.5‰ between compared its inputs suggests that, like seawater, isotopic compo...

Permasalahan dasar dari ketersediaan air tanah pada umumnya disebabkan oleh sumur warga yang masih cukup dalam (informasi lebih 50 m), sehingga memerlukan biaya penggalian produksi sangat mahal terutama bagi desa. Masyarakat di Desa Tegalweru Kecamatan Dau Kabupaten Malang banyak tidak bisa memanfaatkan potensi daerah tersebut. Warga menggunakan bersih hanya bersumber selain tanah. Hal ini kare...

The aims of the work were (1) to develop statistical tests to identify whether substitution takes place under a covariotide model in sequences used for phylogenetic inference and (2) to determine the influence of covariotide substitution on phylogenetic trees inferred for photosynthetic and other organisms. (Covariotide and covarion models are ones in which sites that are variable in some parts...

Clumped isotope values (Δ47) of carbonates forming in high pH conditions do not correspond to mineral precipitation temperatures due certain effects including kinetic fractionation and dissolved inorganic carbon (DIC) endmember mixing. Field-based archives these carbonate environments are needed evaluate quantify accurately. In this study, we measure the clumped anthropogenic for first time. Tu...