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558 results for “dry forest”
Distribution. Coastal NE Brazil from the S of Rio Grande do Norte State (as far W as Jucurutu, 6° 12° S, 37° 02° W,in the caatinga dry forest scrub of the Serra do Estreito), through Paraiba State to NE Pernambuco State; it is possible that it extends to the left bank of the Rio Sao Francisco in Alagoas State. in Cebidae
Distribution. Coastal NE Brazil from the S of Rio Grande do Norte State (as far W as Jucurutu, 6° 12° S, 37° 02° W,in the caatinga dry forest scrub of the Serra do Estreito), through Paraiba State to NE Pernambuco State; it is possible that it extends to the left bank of the Rio Sao Francisco in Alagoas State.
Distribution. NE Madagascar, extremely limited distribution in the far N of the island, just to the S of Antsiranana (= Diégo-Suarez), it was formerly believed to inhabit both dry and humid forests from the Montagne d' Ambre region S to the Mahavavy River near Ambilobe in the W, and probably to the Fanambana River S of Vohémarin the E. However, with the recognition of the Ankarana Sportive Lemur (L. ankaranensis) as a distinct species, the range of the Sahafary Sportive Lemur was reduced to a handful of very small remnant forest patches nearthe villages of Madirobe and Ankarongana in the Sahafary region, and in the immediate vicinity of Andrahona, a small mountain rising out of the surrounding lowlands about 30 km south of Antsiranana and E of the RN6 main road. Recent faunal surveys in the Montagne des Francais, a calcareous massif of c.6114 ha approximately 12 km SE of Antsiranana, listed the Sahafary Sportive Lemur as one of the species occurring there, but this needs to be confirmed; it may be widerranging than the Ankarana Sportive Lemur. in Lepilemuridae
Distribution. NE Madagascar, extremely limited distribution in the far N of the island, just to the S of Antsiranana (= Diégo-Suarez), it was formerly believed to inhabit both dry and humid forests from the Montagne d' Ambre region S to the Mahavavy River near Ambilobe in the W, and probably to the Fanambana River S of Vohémarin the E. However, with the recognition of the Ankarana Sportive Lemur (L. ankaranensis) as a distinct species, the range of the Sahafary Sportive Lemur was reduced to a handful of very small remnant forest patches nearthe villages of Madirobe and Ankarongana in the Sahafary region, and in the immediate vicinity of Andrahona, a small mountain rising out of the surrounding lowlands about 30 km south of Antsiranana and E of the RN6 main road. Recent faunal surveys in the Montagne des Francais, a calcareous massif of c.6114 ha approximately 12 km SE of Antsiranana, listed the Sahafary Sportive Lemur as one of the species occurring there, but this needs to be confirmed; it may be widerranging than the Ankarana Sportive Lemur.
Data and Code for Shriver et al. 2022 "Dry forest decline is driven by both declining recruitment and increasing mortality in response to warm, dry conditions"
<p>Data and Code for Shriver et al. 2022 "Dry forest decline is driven by both declining recruitment and increasing mortality in response to warm, dry conditions".</p> <p>Included are model results, code to generate all analyses and figures, and readme. </p>
Data from: Harvesting has variable effects on demographic rates and population growth across three dry forest tree species
<p>Understanding how anthropogenic activities, such as harvesting, influence plant populations is important to quantify sustainable practices that conserve species of socioeconomic importance. There is limited knowledge on how harvesting of branches and non-timber forest products affect populations of trees in the dry tropics. We measure demographic vital rates of three dry tropical tree species in the presence and absence of harvesting and apply integral projection models to quantify population growth rates, which represent the mean fitness across the life cycle. Our results show that the three species vary in their demographic rates and life history. Harvesting significantly decreases the growth of two species. Current levels of harvesting only significantly decreased the population growth rate of one species that experienced both branch and main stem harvesting. Life table response experiments reveal that the negative effect of harvesting on the population growth rate of this species is primarily due to individuals being forced to re-sprout from their base. Few individuals were observed recruiting from seed, and this might be due to the presence of other threats, such as fire, soil erosion, and grazing. Our results provide knowledge on the demography and the effects of harvesting on endemic tree species of the Eastern Ghats, a region for which few demographic studies are available. These results are relevant to conserving forest biodiversity for the benefits of people and can contribute to quantitative threat assessment for IUCN red listing.</p>
Effects of El Niño drought on seedling dynamics in a seasonally dry tropical forest in northern Thailand
<p><span>As El Niño is predicted to become stronger and more frequent in the future, it is crucial to understand how El Niño-induced droughts will affect tropical forests. Although many studies have focused on tropical rainforests, there is a paucity of studies on them, particularly in Asia, and few studies have focused on seedling dynamics, which are expected to be strongly affected by drought. Seedlings in seasonally dry tropical forests (SDTFs) are generally more drought-tolerant than those in the rainforests, and the effects of El Niño-induced droughts may differ between SDTF and tropical rainforests. In this study, we explored the impact of El Niño-induced drought at an SDTF in northern Thailand by monitoring the seedling dynamics at monthly intervals for seven years, including a period of strong El Niño. The effects were compared between two forest types in an SDTF: a </span><span>deciduous dipterocarp forest (DDF)</span><span>, dominated by deciduous species, and an adjacent </span><span>lower montane forest</span><span> (LMF) with more evergreen species. El Niño-induced drought increased seedling mortality in both forest types. The effect of drought was stronger in evergreen than in the deciduous species, resulting in higher mortality in the LMF during El Niño. However, El Niño increased seedling recruitment only in the DDF, mainly because of the massive recruitment of the deciduous oak, <em>Quercus brandisiana</em> (Fagaceae), which compensated for the mortality of seedlings in the DDF. As a result, El Niño increased seedling density in the DDF and decreased it in the LMF. This is the first long-term study to identify the differences in the impacts of El Niño on seedlings between the two forest types, DDF and LMF, and two leaf habits, evergreen and deciduous, in Southeast Asia. Our findings suggest that future climate change may alter the species composition and spatial distribution of seedlings in Asian SDTFs.</span></p>
FIGURE 6 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 6. Landscape of calcareous rock outcrops (A and B) in the São Domingos municipality, state of Goiás, type locality of Oreobates antrum sp. nov. Photos by C.F. Rocha.
FIGURE 5 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 5. Map showing the type locality of the Oreobates antrum sp. nov. (black star), São Domingos municipality, Brazil. DF = Federal District; GO = State of Goiás; TO = State of Tocantins; BA = State of Bahia; MG = State of Minas Gerais.
FIGURE 3 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 3. Color patterns in live specimens of Oreobates antrum sp. n. from the type locality at São Domingos, State of Goiás. Dorsum light brown (A) and reddish-brown (B), absence of dorsolateral bar (C), dorsolateral longitudinal stripes from post-ocular to sacral regions (D), diagonal labial bars slightly faded (E), light brown blotches between the eyes and nostrils (F). Photos by D.L. Santos, S.P. Andrade and E.P. Victor-Junior.
FIGURE 4 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 4. Power spectrum (above), oscillogram (middle), and corresponding spectrogram (below) of a single call of the Oreobates antrum sp. nov. from type-locality at municipality of São Domingos, state of Goiás, Brazil. Recorded on 01 December 2013 at 21:07h. Air temperature 19°C, relative air humidity 85%.
FIGURE 1 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 1. Consensus tree of Bayesian (A) and maximum likelihood (B) phylogenetic trees inferred from the combined dataset of 2132 bp of the 12S, 16S, RAG-1 and TYR genes. Branches values correspond to posterior probabilities in Bayesian inference (A) and bootstrap in maximum likelihood (B). Only values higher than 0.95 (BC) and 70% (ML) were considered. Branches in red indicate specimens of the new species (Oreobates antrum sp. nov.).
FIGURE 2 in A new cryptic species of Oreobates (Anura: Craugastoridae) from the seasonally dry tropical forest of central Brazil
FIGURE 2. Oreobates antrum sp. nov. Dorsal (A) and lateral (B) views of the head, palmar (C) and plantar (D) views of the Holotype (MNRJ 91628). Bars = 3 mm.
FIGURE 2 in A new species of Rhadinella (Serpentes: Dipsadidae) from the dry forest of Motagua Valley, Guatemala
FIGURE 2. Dorsal (A) and lateral (B) views of head of the holotype of Rhadinella xerophila (UVG R-7003). Head length 8.3 mm, head width 4.5 mm. Photo "B" by A. Novales.
FIGURE 1 in A new species of Rhadinella (Serpentes: Dipsadidae) from the dry forest of Motagua Valley, Guatemala
FIGURE 1. General view in life of the holotype of Rhadinella xerophila (UVG R-7003), SVL 214 mm (A) and landscape view of the dry forest habitat at Heloderma Natural Reserve, Motagua Valley (B). Photo "A" by A. Novales.
FIGURE 2. Bromeliad species sampled. A in Ciliate species from tank-less bromeliads in a dry tropical forest and their geographical distribution in the Neotropics
FIGURE 2. Bromeliad species sampled. A=Tillandsia dasyliriifolia, B=T. rothii, C=Bromelia pinguin, D=T. polystachia and E=B. karatas.
FIGURE 3. a–p in Ciliate species from tank-less bromeliads in a dry tropical forest and their geographical distribution in the Neotropics
FIGURE 3. a–p. Ciliate from tank-less bromeliads in vivo (a, c, f, h, i, l), silver nitrate impregnation (e, j, k, n, o, p), protargol impregnation (b, d, m) and nigrosine (g). a. Spathidium spathula, b. Pattersoniella vitiphila, c. Gonostomum bromelicola, d. Drepanomonas revoluta, e. D. minuta, f. Bresslauides terricola, g. Colpoda cucullus, h. Epistylis sp., i. Vorticella sp., j. C. maupasi, k. Colpoda aspera, l. Leptopharynx costatus, m. Phacodinium metchnikoffi, n. Cyclidium glaucoma, o. Odontochlamys gouraudi, p. Tetrahymena sp. Scale bar: 10 µm. 20 X (f), 40 X (a, b, c, g, h, i, j, l, m, p), 100 X (d, e, k, n, o).
FIGURE 1 in Stink bugs (Hemiptera, Heteroptera, Pentatomidae) of the Catimbau National Park, a protected area in Brazil's largest dry forest
FIGURE 1. Collection sites of Pentatomidae in Brazil sampled with systematized collection (A) focuses mainly in the Atlantic Forest of northeastern and southern Brazil and the Pampa (B–C). This study is the first systematized sampling of Pentatomidae in the Caatinga (C). AL, Alagoas; PE, Pernambuco; RS, Rio Grande do Sul; SC, Santa Catarina.
FIGURE 3 in Stink bugs (Hemiptera, Heteroptera, Pentatomidae) of the Catimbau National Park, a protected area in Brazil's largest dry forest
FIGURE 3. Dorsal habitus of species of Pentatomidae collected at the Catimbau National Park, Pernambuco, Brazil. (A) Podisus nigrispinus; (B) Tetragonotum megacephalum; (C) Edessa rufomarginata; (D) Edessa triangularis; (E) Edessa sp.; (F) Chinavia runaspis; (G) Cyptocephala alvarengai; (H) Dichelops (Diceraeus) caatinguensis; (I) Loxa deducta; (J) Mormidea v-luteum; (K) Piezodorus guildinii; (L) Thyanta humilis. Scale bars = 2 mm.
FIGURE 5 in Aphelandra almanegra (Acanthaceae), a new species from the dry forests of the Cauca River canyon in Antioquia department, Colombia
FIGURE 5. Illustration of informative characters between related species of Aphelandra. A–D. A. almanegra: A. Strigose apical stem indumentum B. Abaxial leaf surface sparsely strigose C. Subsessile inflorescence with multiple reduced leaves D. Bract length and sericeous bract indumentum E–H. A. barkleyi: E. Sparsely strigose, almost glabrous apical stem indumentum F. Abaxial leaf surface glabrous G. Notably pedunculate inflorescences H. Bract length and minutely and inconspicuously pubescent bract indumentum I–L. A. pulcherrima: I. Pubescent to tomentose apical stem indumentum J. Abaxial leaf surface pubescent K. Subsessile inflorescence L. Bract length and puberulous bract indumentum M–P. A. mildbraediana: M. Stem apical indumentum densely strigose N. Abaxial leaf surface indumentum minute and sparsely strigose O. Subsessile inflorescence P. Bract length and sparingly pubescent bract indumentum Q–T. A. glabrata: Q. Apical stem indumentum moderately pubescent R. Abaxial leaf surface pubescent S. Sessile inflorescence T. Bract length and minutely puberulous bract indumentum. (A, B, C from Zarucchi, 7253; D from J. C. Madrugo et al. 887; E, G from L. Uribe-Uribe 1319; F, H from W.R. Philipson 1351; I, L from J. Cuatrecasas 25517; J from O. Haught 3759; K from A. Dugand 2800; M from J. G. Hawkes 587; N, O, P from J. H. Torres & P. Pinto 2955; Q-T from C. Saravia 4668. All specimens from COL. In the bract images, the vertical bars correspond to 1 cm. Composed by Samir Gallego).
FIGURE 3 in Aphelandra almanegra (Acanthaceae), a new species from the dry forests of the Cauca River canyon in Antioquia department, Colombia
FIGURE 3. Geographical distribution of Aphelandra almanegra based on herbarium specimen data. Map prepared using QGIS v.3.28.2 (QGIS Development Team, 2023).
FIGURE 1. Aphelandra almanegra. A. Flowering branch with axillary and terminal inflorescences B. Floral bract showing indumentum and contiguous glandular ocelli C. Bracteoles D in Aphelandra almanegra (Acanthaceae), a new species from the dry forests of the Cauca River canyon in Antioquia department, Colombia
FIGURE 1. Aphelandra almanegra. A. Flowering branch with axillary and terminal inflorescences B. Floral bract showing indumentum and contiguous glandular ocelli C. Bracteoles D. Calyx; from left to right: posterior lobe, pairs of lateral and anterior lobes E. Lateral view of flower with its lower lobe extended F. Interior view of flower. Note the hirtellous base of the filaments G. Stamen. H. Gynoecium. Note bilobed stigma and the base of the style with short, stout trichomes I. Dehiscing capsule J. Seed. (Illustration by Marcela Morales).
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