A bryophyte checklist of the ecological reserve of Gurjaú, Pernambuco, Brazil

A bryophyte checklist of the Ecological Reserve of Gurjaú (08º10’00'’-08º15’00"S; 35º02’30"- 35º05’00"W), a remnant of the Atlantic Forest in the State of Pernambuco, has been compiled. The Reserve covers an area of approximately 1362 ha, including several forest fragments of diverse sizes and stages of conservation. Specimens collected during the years 2000 and 2001, and voucher specimens from the UFP Herbarium at the Federal University of Pernambuco (UFPE) were analyzed. Bryophytes were collected on live and dead trunks, rocks, leaves and soil. The studied bryoflora is composed of 53 species of liverworts, 37 species of mosses and one hornwort. Among the twenty-three registered families, Lejeuneaceae (41 spp.) was the most representative one with the highest generic and specific richness, which confirms its status as predominant in tropical rain forests. Fissidens (7 spp.), Lejeunea and Cheilolejeunea (6 spp.), and Calymperes (4 spp.) were the most representative genera. The studied bryoflora is predominantly composed of species of neotropical distribution, widely spread throughout Brazil. The presence of an endemic species of the Atlantic Forest, Vitalianthus bichlerianus (Pôrto & Grolle) Schust. & Giancotti, and some other exclusively Brazilian species, e.g., Riccardia regnellii (Ängstr.) Hell have been recorded from the site

Floristic survey of epixylic Bryophytes of an area remnant of the Atlantic forest (Timbaúba - PE, Brazil) : 1., Hepaticopsida (except Lejeuneaceae) and Bryopsida

A survey of the epixylic bryoflora of a remaining Atlantic forest (seasonal coastal deciduous forest), Engenho Água Azul, in the municipality of Timbaúba ( Lat 7° 35S; Long. 35° 20W ), State of Pernambuco, Brazil, registered 35 species of bryophytes distributed in 11 families of Bryopsida: Calymperaceae, Pilotrichaceae, Fissidentaceae, Hookeriaceae, Hypnaceae, Leucobryaceae, Leucomiaceae, Orthotrichaceae, Plagiotheciaceae, Sematophyllaceae, Thuidiaceae, and 5 of Hepaticopsida: Aneuraceae, Frullaniaceae, Geocalycaceae, Plagiochilaceae and Radulaceae. New records northeastern of Brazil are: Frullania caroliniana Sullivant, F. gymnotis Nees & Mont., Ochrobryum stenophyllum Besch., Plagiochila trigonifolia Steph., Radula macrostachya Linbenb. & Gott., Riccardia digitiloba (Spruce ex Steph.) Hell, Thuidium tomentosum Schimp. ex Besch. and Trichosteleum pusillum (Hornsch.) Jaeg. There is an indication of the description, illustration, and geographic distribution for Brazil of all taxons found.En este trabajo se presenta el catálogo de la flora briofítica epífita de la selva tropical oceánica Engenho Agua Azul, situada en el municipio de Timbaúba (Lat. 7º 35S; Long. 35º 20O), perteneciente al estado de Pernambuco, Brasil. Se registraron 35 especies de briófitos distribuidas en 11 familias de la clase Bryopsida: Calymperaceae, Pilotrichaceae, Fissidentaceae, Hookeriaceae, Hypnaceae, Leucobryaceae, Leucomiaceae, Orthotrichaceae, Plagiotheciaceae, Sematophyllaceae, Thuidiaceae y 5 de la clase Hepaticopsida: Aneuracee, Frullaniaceae, Geocalycaceae, Plagiochilaceae y Radulaceae. Se aportan nuevas citas para la región nordeste del Brasil - Frullania caroliniana Sullivant, F. gymnotis Nees & Mont., Ochrobryum stenophyllumBesch., Plagiochila trigonifoliaSteph., Radula macrostachya Linbenb. & Gott., Riccardia digitiloba(Spruce ex Steph.) Hell, Thuidium tomentosum Schimp. ex Besch. yTrichosteleum pusillum (Horsnch.) Jaeg. Se presenta una descripción y una ilustración de cada taxon y se comenta su distribución geográfica

New records of bryophytes for Pernambuco State, Brazil

The known geographical distribution of 12 bryophyte species is extended by confirmation of their presence in the state of Pernambuco. Leptoscyphus porphyrius (Nees) Grolle, Harpalejeunea uncinata Steph., Chryso-hypnum diminutivum (Hampe) Buck and Porotrichum korthalsianum (Dozy & Molk.) Mitt. are new to northeastern Brazil. The material studied was collected in remnants of Atlantic Forest situated at altitudes of 100-1.100m. The principal taxonomic characteristics are cited, with ecological and distributional commentary provided.A distribuição geográfica conhecida de 12 espécies de briófitas é ampliada, com o registro de sua ocorrência no estado de Pernambuco. Leptoscyphus porphyrius (Nees) Grolle, Harpalejeunea uncinata Steph., Chryso-hypnum diminutivum (Hampe) Buck e Porotrichum korthalsianum (Dozy & Molk.) Mitt. constituem-se novas referências para a região Nordeste. O material estudado foi coletado em remanescentes da Floresta Atlântica, situados de 100 a 1.100m de altitude. Faz-se referência às principais características taxonômicas do material, bem como, breves comentários ecológicos e de distribuição geográfica

Effects of light and nutrients on different germination phases of the Cosmopolitan moss Bryum argenteum Hedw. (Bryaceae)

The influence of light and nutrients on the different germination phases of Bryum argenteum spores was studied. The following treatments were used: distilled water and nutrient solution under light (12 h) and continuous darkness. The spores germinated when exposed to light, independent of both medium used. Under darkness, the spores swelled and became chlorophyllous. In the presence of nutrient solution, the germination occurred earlier (after two days) when compared to the distilled water (after more than three days). Nutrients were needed to complete the last germination phase in the majority of spores and to provide the protonemal growth.Neste estudo procuramos avaliar a importância de fatores abióticos sobre a germinação de esporos e o desenvolvimento do protonema de musgos. Para isso, nós analisamos o efeito da disponibilidade de luz e nutrientes sobre diferentes fases da germinação de esporos de um musgo amplamente distribuído. Bryum argenteum geralmente apresenta muitos esporos por cápsula, e estes são amarelos devido à presença de muitos corpúsculos lipídicos. Foram usados os tratamentos: água destilada e solução nutritiva sob luz (12 h) e escuro contínuo. Os esporos mostraram-se fotoblásticos positivos, ou seja, apenas germinaram sob luz, independentemente do meio utilizado. Sob escuro os esporos apenas embeberam, tornando-se clorofilados provavelmente a partir da quebra de reservas. Em solução nutritiva a germinação ocorreu mais rapidamente (dois dias) em relação à água destilada (mais de três dias após cultivo). No entanto, os nutrientes foram necessários para completar a última fase da germinação da maioria dos esporos.76376

How does reproductive strategy influence demography? A case study in the tropical, unisexual epiphyllous moss Crossomitrium patrisiae

PREMISE OF THE STUDY: Leaf-inhabiting organisms offer an experimentally tractable model system within which to investigate the influence of alternative reproductive strategies on plant metapopulation dynamics. We conducted a field study to determine whether (1) threshold colony sizes exist for the onset of sexual and asexual expression, and (2) alternative reproductive strategies differentially influence within-patch dynamics of the tropical pleurocarpous moss Crossomitrium patrisiae. METHODS: The growth, reproduction, and fate of 2101 colonies of C. patrisiae were followed over 2 years to investigate threshold size and age for sporophyte and brood branch formation and their influence on within-patch growth rates and longevity. KEY RESULTS: Asexual expression rather than sexual onset was limited by a minimal colony size. Age was uncoupled with threshold sizes. Colonies bearing brood branches survived nearly twice as long as sterile and solely sporophytic colonies. However, no effect of reproductive strategies on colony growth rates was found. C ONCLUSIONS: This study is among the few attempts to correlate life history strategies with demographic parameters of terrestrial plants. Specifically, we provide evidence for differential influence of reproductive strategies on metapopulation survivorship. © 2016 Botanical Society of America