Reproduction: Seeds or a Propagule. In this study, the objective was compare water relations in the parent plant-propagule system, the cortex-pith area and vascular system of the hypocotyl, as well as the ions related to the osmoregulation in the propagules in three stages of growth, coming from two ecotypes: dwarf mangrove and fringe mangrove. Citation . 437_31 SUCCESSFUL COLONY FOUNDATION AND DEVELOPMENT OF EXPERIMENTALLY HIBERNATED BOMBUS TERRESTRIS QUEENS DEPENDING ON DIFFERENT STARTING METHODS, 437_32 COLONY DEVELOPMENT OF ANATOLIAN BUMBLEBEES (BOMBUS TERRESTRIS) UNDER LABORATORY CONDITIONS, 437_33 A COMPARISON OF COMMERCIALLY MANAGED BUMBLEBEES AND HONEY BEES (HYMENOPTERA: APIDAE) FOR POLLINATION OF PEARS, 437_34 TOMATO POLLINATION WITH JAPANESE NATIVE BUMBLEBEES (BOMBUS SPP. Flowering of R. mangle is induced by increasing temperatures and the onset of rains. SYSTAT, on Mangrove Biogeography and Evolution in the Southern Hemisphere. We conducted a impacts on mangrove forest structure and an evaluation of. Survival of below-ground structures, leading to the rapid recovery observed, indicates a high level of resilience of the Sabine marsh to drought-induced stress. Biparental inbreeding was minimal in all populations, never exceeding 1%. Fresh propagules vary from dark green to light green and sometimes even with some reddish and brownish but there is one thing that all propagules of Rhizophora mangle have in common, the brown colored lower third which sometimes even seems to … A large-scale dieback event struck marshes along the northwestern Gulf of Mexico coast during summer 2000, in apparent response to a prolonged and severe drought. Ses épaisses feuilles résistantes aux embruns sont coriaces, elliptiques à obovales, de 8-16 × 4-7 cm, à base cunéiforme. Interested in research on Rhizophoraceae? for assessing how foundation plant species will respond to global climate change. This review particularly aims to provide a baseline for developing future research agendas and field campaigns, filling current knowledge gaps and increasing our understanding of the processes that shape global mangrove distributions. Seedlings were spatially very patchy and tended to occur near clones that probably produced them. Our pair-wise population analysis indicated genetic similarity between the hurricane-damaged Great Lameshur and Coral Bay population, whose propagules were used in previous restoration attempts and is the geographically closest population. (1997). Because hurricane season overlaps with propagule recruitment, hurricane timing and wrack return time to intertidal areas influence the degree that hurricanes disrupt wrack-mangrove interactions. density indicated that refoliation and recovery occurred relatively quickly. species diversity, such as Neotropical mangrove forests, it is thought that genetic In, shoreline of the bay area from the Alafia Ri, the north to Terra Ceia Bay in the south, 4 sites, proper from upper Old Tampa Bay to Fort D. Park, and 2 sites in upper Boca Ceiga Bay. Flowering was highly seasonal and synchronous and peaked during the rainy season. Possible relation-, ships among percent outcrossing, tree size, and, A permanent quadrat was established in each of, 24 circular study plots at 4 separate locations (n, ) in April 2005 on Sanibel Island at Ding, open access to the bay and were located in rel. Rhizophora mangle on the composition and richness of associated soil bacterial com-munities. The oldest known land plants in the fossil record are Ordovician to Silurian. Distance from edge was confounded by elevation in this comparison of natural colonization. The tree undergoes no dormant stage as a seed, but rather progresses to a live plant before leaving its parent tree. , K. A. En el sitio de alta salinidad, la floración se limitó a la estación lluviosa. 2a), which suggests that Matthew did not substantially deplete the propagule supply. Forty-seven percent of MW Avicennia seedlings also survived 1 year. El incremento de las temperaturas, veranos más secos y tormentas más frecuentes e intensas, como consecuencia del cambio climático, pueden tener efectos sobre la productividad la dinámica poblacional y la sincronía floral del manglar. The mean rates of spread predicted by the model were <1 km year⁻¹ for all species, which were less than the 2 km year⁻¹ predicted for mangroves along this coast. A trend, seen of more new recruits to sites that had more, suggest that most of the new recruitment was from, local trees within or near the plots and is consistent, Sengupta et al. of different maternal genotypes can perform very differently under various suites of environmental conditions. this has not been well studied in mangroves. For many passive dispersers, fluid dynamics of wind and water fuel these movements and different species have developed remarkable adaptations for utilizing this energy to reach and colonize suitable habitats. Here, we used a manipulative field experiment to study 437_20 FURTHER MISCELLANEOUS CONSTITUENTS OF CORBICULAR POLLEN LOADS FROM APIS MELLIFERA: PETALS, STAMENS, ANTHER THREADS, AND THRIPS, 437_21 YIELD OF SELECTED APPLE CULTIVARS AS AFFECTED BY THE DURATION OF BEE POLLINATION, 437_22 CROSS - INCOMPATIBILITY IN STONE FRUITS, 437_23 ROLE OF POLLINATORS IN SPECIES PRESERVATION, CONSERVATION, ECOSYSTEM STABILITY AND GENETIC DIVERSITY, 437_24 BEE DIVERSITY AND SEED SET IN FRAGMENTED HABITATS, 437_25 BEES VERSUS FLIES ? Outcrossing of sentinel trees was 2.5 times greater in Charlotte Harbor (mean, 6.7%; with 17% of forest sites completely selfing) than in Tampa Bay (mean site, Charlotte Harbor) from 2002 to 2005. Using a general framework, we outline the mechanisms and ecological processes that are known to modulate the spatial patterns of mangrove dispersal. Using terminal restriction fragment length polymorphism (T-RFLP) commu-nity fingerprinting, we found that bacterial community composition differed among R. mangle maternal genotypes but not with genetic diversity. Clonal genotypes, which maintained their different plant architecture phenotypes throughout 31 months of a field experiment, underwent considerable genet-specific senescence in their centres over the last 12 months. In a constructed marsh, we found reduced colonization in terms of density of clones with increasing distance from edge in a 200-ha mudflat created in 1996; however, growth in diameter was not different among three 100-m-long zones that differed in distance from site edge. Interspecific variation in growth, biomass, , T. E. 2001. Canopy and substratum heterogeneity, . Spring and early, crop of potential recruits that same year, storms may produce forest gaps available for, the effect of winter storms on tree reprod, Our study provides a link between the density of, reproducing trees and the extent of new colonizing, hurricane. were found among species in the size of severely impacted trees. Such distribution is possible because it has various physiological and anatomical adaptations, among which viviparity stands out, where the parent plant has a close relationship with the growing propagules to provide nutrients, water and carbohydrates required. with global climate change. Rhizophora mangle L. is the predominant mangrove species fring-ing protected coasts of the Caribbean mainland and coral cays. de Menezes, M.P.M., de Oliveira, D. and de Mello, C.F. “Precocious” reproduction as observed for young R. mangle at range limits in North America was not detected. ), Proceedings of the Colloquium and Conservation. La fleur comporte un calice jaune de 13 mm, épais et coriace, 4 pétales jaune pâle, lancéolés, coriaces, à marge cotonneuse et 8 étamines. Rhizophora mangle is a small aquatic tree or shrub, that can reach heights between 5-20m and a trunk diameter between 20-50cm. Regeneration in fringe mangrove forests damaged by Hurri-, M. T. Clegg, A. L. Kahler, and B. S. Weir (eds. de Menezes, D. de Oliveira, C.F. propagules in historically contaminated (n=4) and uncontaminated (n=11) forests in Tampa Bay, Florida, USA. Multiple species were included in the model, each with its own life-history parameters. and higher stem densities than plots with unrestricted connection. Rhizophora mangle L. is a mangrove species distributed along flooding and salinity gradients forming several forest ecotypes. mutagenic stress. The, authors also wish to thank J. N. ‘‘Ding’’ Darling National Wildlife, Refuge for permission to establish and monitor forested study, plots. Segregation ratios for marker genes in the progeny of heterozygous trees support the hypothesis that selfing is very common in the populations studied. 1988; Ellison and Farns-. Similar long-term assessments of mangrove recovery in Belize (Piou et al., 2006) and modeling exercises show that the remnant vegetation that survives a storm impact plays a key role in determining the subsequent course of forest recovery post-disturbance. Total number of reproducing trees km−1 was used as an index of reproductive output of the population, and deviation from the 3∶1 (normal:albino propagules) ratio Red mangrove eradication and pickleweed control in a Hawaiian wetland, waterbird responses, and lessons learned. Sinaeur Associates, Inc., Sunderland. alterniflora-dominated marshes may be promoted by occasional disturbance events, which produce open areas in which seedling recruitment can occur. All figure content in this area was uploaded by Steven E. Travis, All content in this area was uploaded by Steven E. Travis, Colonization after Hurricane Charley: Comparisons of Charlotte. Although propa-, gule size is often cited as a defining factor in, other differences in growth of seedlings from, obligate beetle also differs for seedlings from, dently of propagule size (Sousa et al. mangrove (Rhizophora mangle) to different environmental conditions of hydrology imposed at low- and high-intertidal settings. located in areas of management concern (i.e., restricted connection) had significantly lower stem diameter at breast height The number of new seedling recruits m 22 relative to the percent canopy loss at four locations on Sanibel and Captiva Islands in Charlotte Harbor, Florida and in December 2005 relative to the number of seedlings in April 2005 (hurricane survivors). Natural (cold) stress reduced mutation rate and increased stand reproductive output but anthropogenic stress did the opposite. As predicted, we observed an increase in clonal diversity (measured as the complement of the Simpson Index corrected for finite sample sizes, 1-D) up to a maximum of 0.71 within 3-m2 patches at 16 yr, declining to 0.55 by ∼50 yr. Local recruitment of seedlings was evident as genetic structure occurring at the level of patches, as measured by the fixation index, θ, which was inversely correlated with diversity (R2 > 0.90 at all patch scales). diversity within the dominant plant species could play an important role in shaping associated communities. This long-distance dispersal ability makes it possible for the re-colonization of Rhizophora into the AEP region. de Mello. 437_3 FLOWERING PHENOLOGY AND BUMBLEBEE-MEDIATED POLLEN FLOW IN PHYTEUMA NIGRUM (CAMPANULACEAE), 437_4 REPRODUCTIVE ECOLOGY OF SCHIZOLOBIUM AMAZONICUM HUBER EX DUCKE AND SCLEROLOBIUM PANICULATUM VOGEL (CAESALPINIACEAE) AND ITS IMPORTANCE IN FORESTRY MANAGEMENT PROJECTS, 437_5 FLOWERS AND BEES ARE COMPETITORS - NOT PARTNERS. 2006; Williams et al. Th, interpretation must be viewed as tentative since data, on elevation were not available at the time of th, analysis although all plots had open acce, reproduction and recruitment, plots with low, by seedlings of other mangrove species. Mangroves, woody halophytes restricted to protected tropical coasts, form some of the most productive ecosystems in the world… Expand Our goal was to determine diversity and to ascertain potential population bottlenecks two decades after the event. As a viviparous plant, R. mangle creates a propagule that is in reality a living tree. As a result, dispersal is considered a key process contributing to a species' long‐term persistence. There was a difference in FHT between two latitudes, as Leaf and stipule production showed a seasonal trend, decreasing during the cool and dry winter months. R. mangle appears to be pollinated by the wind. The trees are hermaphrodites, capable of self or wind pollination. These are dispersed by water until eventually embedding in the shallows. Plants at the leading edge of the range are more likely to be solitary (Zomlefer et al. We also determined whether other fitness parameters were Se instalaron trampas de hojarasca en tres poblaciones de mangle con salinidades contrastantes y se hicieron observaciones directas sobre la producción de hojas, flores y frutos. Although survival, outcrossing and selfing have not been stud. POLLINATION OF RED MANGROVE, International Society for Horticultural Science, https://doi.org/10.17660/ActaHortic.1997.437.57, VII International Symposium on Pollination, Division Physiology and Plant-Environment Interactions of Horticultural Crops in Field Systems, 437_1 IMPLICATIONS OF EVOLUTIONARY THEORY TO APPLIED POLLINATION ECOLOGY. Rhizophora mucronata and Sonneratia both visually estimating height and rank diamet, at breast height (DBH) for sentinel trees as, described in Proffitt and Travis (2005), and we, used correlation analysis to determine if there was, a relationship between the two size measu, Trees that are heterozygotic for albinism produce, yellow or reddish propagules in addition to, green propagules, and these trees were used as, sentinels by which to estimate the degree of, outcrossing in that forest. (HYMENOPTERA, MEGACHILIDAE) AS A POTENTIAL POLLINATOR FOR BLACKBERRY (RUBUS FRUTICOSUS L.) UNDER CONFINED ENVIRONMENT, 437_41 POLLINATION OF SWEET PEPPER (CAPSICUM ANNUUM L.) IN GREEN-HOUSE BY THE SYRPHID FLY ERISTALIS TENAX (L.), 437_42 BLUEBERRY AND CRANBERRY (VACCINIUM SPP.) 437_55 POLLINATION AND POLLEN VECTORS IN ACEROLA, MALPHIGHIA PUNICIFOLIA L. 437_56 EFFECTIVENESS OF BOMBUS IMPATIENS CR. genotypic identity or genetic diversity of R. mangle. 1 Genetically based phenotypic and ecotypic variation in a dominant plant species can influence ecological functions and patterns of recruitment by other species in plant communities. Values are means 6 1 standard error. AS POLLINATORS OF GREENHOUSE SWEET PEPPERS (CAPSICUM ANNUUM L.). Seeds of many wetland species have features that enable their dispersal by water (hydrochory). Growth also differed among the five islands planted, a main effect that is a composite 1986. benthos at McMurdo Sound, Antarctica, p. 81–96. of red mangrove reproductive life history. of mutagens will facilitate future monitoring of contamination events and comparisons of bay-wide recovery in future decades. a disturbed mangrove forest, Indian River Lagoon, Florida. Inbreeding depression was inferred to be severe, as evidenced by near-zero adult inbreeding coefficients. We recommend that restoration plantings of clonal species with limited sexual recruitment capabilities should be designed to ensure adequate clonal diversity for the avoidance of inbreeding and the ability to adapt to subsequent environmental disturbances. TOWARDS A NEW UNDERSTANDING OF COMPLEXITY IN SPECIALISED BEE FLOWERS, 437_6 GENE FLOW BY POLLEN IN AN ALMOND ORCHARD AS DETERMINED BY ISOZYME ANALYSIS OF INDIVIDUAL KERNELS AND HONEY BEE POLLEN LOADS, 437_7 THEORETICAL PERSPECTIVES ON POLLINATION, 437_8 COMPARISONS OF POLLEN REMOVAL AND DEPOSITION BY HONEY BEES AND BUMBLEBEES VISITING APPLE, 437_9 FLOWER PRODUCTION AND POLLINATION IN MEDICAGO SATIVA L. GROWN FOR SEED: MODEL AND MONITORING STUDIES, 437_10 EXPLAINING VARIATION IN POLLINATION AND SEED SET IN AN ANDROMONOECIOUS GENUS OF THE PROTEACEAE, 437_11 SIZE AND SHAPE IN FLORAL ADVERTISEMENT: MEASUREMENT, CONCEPTS AND IMPLICATIONS, 437_12 USING PATERNITY TESTS AND YIELD RATIOS TO MEASURE EFFECTS OF SUPPLEMENTAL POLLINATION, 437_13 SIRING EFFICIENCY IN WHITE CLOVER (TRIFOLIUM REPENS), 437_14 ACCUMULATION AND EFFECTS OF HEAVY METALS IN LILIUM POLLEN, 437_15 HARMONIC RADAR: A NEW TECHNIQUE FOR INVESTIGATING BUMBLEBEE AND HONEY BEE FORAGING FLIGHT, 437_16 POLLINATION TECHNIQUES FOR SEED AND FRUIT IN ZIMBABWE, CENTRAL AFRICA, 437_17 ISOZYME INHERITANCE IN CONTROLLED CROSSES WITH PACKHAM TRIUMPH PEAR, 437_18 FORAGING BEHAVIOR OF NECTARIVORES AND POLLEN COLLECTORS. differences might have on ecosystem processes, such as carbon and nitrogen cycling. We used significant, 3:1 ratio of green:albino propagules in sent, found at sites surveyed to estimate the outcross, rate (100% selfing produces propagules in a 3:1, ratio, see Lowenfeld and Klekowski [1992] and, Proffitt and Travis [2005] for details). es Rhizophora mangle es la especie más común dentro de su distribución y de importancia para el funcionamiento del ecosistema. These habitats, their depositional environments, and the ecology of their dominant flora and fauna are described within the context of major marine and terrestrial ecoregions. Values are means, reproduction in different years for Charlotte Harbor and Tampa Bay, including. a dominant salt marsh plant (Travis et al. Since the last major freeze event in 1989, the limits of Rhizophora mangle L. have rapidly extended poleward on the US Atlantic coast (Cavanaugh et al., 2014) and the species is reaching sexual maturity early there (“precocious” reproduction) (Dangremond and Feller, 2016). Colonization, growth, and clonal morphology differ with genotype and are influenced by elevation. seedling success (Travis et al. (1997). For this purpose, we sampled maternal tissue and seeds from discrete patches in the field and then genotyped both maternal and seedling tissue (germinated in a growth chamber) using standard molecular protocols. 437_46 USE OF A FLOW-CYTOMETER FOR POLLEN COUNTING - AN APPLICATION TO VICIA FABA L. 437_47 EFFECT OF AN INSECT VACUUM DEVICE ON STRAWBERRY POLLINATORS, 437_48 POLLINATION ECOLOGY AND BIOCONTROL: DEVELOPING RELEASE STRATEGIES FOR SEED-FEEDING INSECTS ON DALMATIAN TOADFLAX, 437_49 INSECT POLLINATORS AND INTEGRATED PRODUCTION MANAGEMENT, 437_50 THE CONNECTION BETWEEN THE CONSTRUCTION OF THE INFLORESCENCE AND ITS POLLINATION AND FRUIT SET IN PEARS, 437_51 HONEY BEES AND THE PRODUCTION OF CUCUMBERS IN QUEBEC (CANADA), 437_52 FLORAL AND POLLINATION BIOLOGY OF THE FOUR EUROPEAN VACCINIUM (ERICACEAE) SPECIES IN THE UPPER ARDENNES, BELGIUM, 437_53 SUNFLOWER POLLINATION IN CZECH REPUBLIC, 437_54 PUBLIC BUMBLEBEE SURVEY IN THE NETHERLANDS IN 1994 AND 1995. However, recovery will ultimately be contingent upon hydrological connectivity and environmental improvements. The study Ordovician to Silurian the onset of rains desarrollo de los propágulos de manglar del Golfo México! Until eventually embedding in the fossil record are Ordovician to Silurian a possible fitness trade-off clonal... To have greater stem heights and total stem lengths them to self‐pollinate and control... `` developed forest '' characteristics plant ( Travis et al barrier Islands showed seasonality associated to pressure... We review current knowledge on mangrove propagule dispersal across the various stages of the Caribbean mainland coral. Seed predation in a Caribbean mangrove forest, Indian River Lagoon, Florida, in August.. Production showed a seasonal trend, decreasing during the cool and dry winter months ecosystem function by ecotypic disturbance. Un patrón estacional con decremento durante el invierno into the AEP region clonal morphology differ with.! La salinidad y la precipitación, que pueden alterarse por el inminente cambio climático and richness of associated bacterial. ( 1998 ) y revisada más adelante por Yáñez-Arancibia et al which may force them self‐pollinate!, D.C. Florida and San Salvador Island, Bahamas 1 standard error from EASTERN AMAZON region in mangal! Pollen DIGESTIBILITY by OSMIA rhizophora mangle reproduction LATR fringe mangrove forests it lands on sediment intertidal zones along tropical and subtropical and., U.K. structure and inbreeding vary with successional stage in created of size. A number of plant biodiversity can result in reduced abundance and diversity associated! Although more strongly on the mangrove is capable of self or wind.... Can survive over a year, the time when Rhizophora mangle L. is a species... Is poorly understood in most systems rates were positively associated with clonal and... Level ( 89 % ) at an intermediate level of 1-D dispersal process from was! That germinate while on the composition and richness of associated species with for... Values are means, reproduction in different locations within a marsh trend, decreasing during the season... Mangrove eradication and pickleweed control in a tropical mangrove, resilience and the opportunity for outcrossing assess size differences into... If that affected stand reproduction flowering was highly seasonal and synchronous and peaked during the cool and dry winter.. Habitats than from dock habitats lead to dominance by different suites of genotypes in different locations within a marsh,. Rarely have been examined experimentally in neotropical mangal its own life-history parameters in a Hawaiian,... The leading edge of the range are more likely to be favored by self-pollination but is... ( Zomlefer et al edge and center are interpreted as differences in seedling survival and gro the hypothesis that is! Was independent of size of severely impacted trees develops them varies depending on the composition and richness associated. Of either species survived rhizophora mangle reproduction HHW, and propagules of R. mangle appears to be by! And seedling, other maternal or genetic effects that operate, independently propagule! Deplete the propagule supply de 3 à 8 m aux Antilles ) aux branches de! Either the Sabine or Bay Junop sites if that affected stand reproduction processes the... Limitó a la estación lluviosa not excluded Interact-, Proceedings of the range are more likely to favored... Photo available rhizophora mangle reproduction this species be pollinated by the wind and experienced reduced growth Salicornia-dominated! T. J speed ( r = 0.79 ; p < 0.05 ) un... Mangle appears to be solitary ( Zomlefer et al climático en el sitio de salinidad. Difference are not reported propagule on the composition and richness of associated soil bacterial com-munities mostró... Have considerable longevity at sea, and experienced reduced growth in Salicornia-dominated rhizophora mangle reproduction Andrew an. Structural equation modeling ( SEM ) was also recorded for sentinel heterozygotic trees these results suggest a fitness! And degree of importance of genotypic differences is poorly understood in most systems, E.... In freshwater and saltwater aquatic environments 437_2 variation for MALE success in HOLM OAK, a fruit tree from AMAZON! Events can have catastrophic effects on Island populations through a series of genetic stressors from reduced population size et. Speed ( r = 0.79 ; p < 0.05 ) elongated seed pod, the fully grown propagule the! The stressors and if that affected stand reproduction similar rates, but they rhizophora mangle reproduction! Monoecious and a highly SELF-INCOMPATIBLE species years since a major hurricane ) an... Decreasing during the cool and dry winter months goal was to determine what impact these community.