#Dispersal

Botanical Society of America

@botsocamerica.bsky.social

1 month ago

Conceptual figure. (A) Seeds dispersed from a parent plant to focal plants may either be not trapped or retained, trapped but not retained, or trapped and retained. (B) The authors hypothesize that due to physical attributes (i.e., size and growth form), plant species could be good trappers, but not good retainers (species 1), vice versa (species 2), or have similar trapping and retention probabilities (species 3).

Wind-driven seed #dispersal differentially promotes seed trapping & retention across alpine plants

New #AJB research by Courtenay Ray, Savannah Troy, Emily Xie, Thomas Jenkins, Gavin Belfry, Aidan Wells, Perry de Valpine & Benjamin Blonder

doi.org/10.1002/ajb2...

#botany #plantscience #ecology

FeM - Funghi e Micologia

@funghimicologia.bsky.social

2 months ago

The biogeography of soil- and airborne fungi in the southwestern U.S. in relation to climate and vegetation Abstract. To assess how fungal dispersal might respond to climate change, we examined how climate and geography influence the regional distribution of fung

The biogeography of soil- and airborne fungi in the southwestern U.S. in relation to climate and vegetation

#dispersal
#distance-basedredundancyanalysis
#distance-decayrelationships
#fungalcommunitycomposition
#precipitation
#spatialautocorrelation

academic.oup.com/ismecommun/a...

Fred Michel

@horticulturalart.bsky.social

2 months ago

66302.01 Asclepias syriaca #Asclepiassyriaca #Asclepias #milkweed #native #seedpod #seeds #blowing #dispersal #wildflower

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

2 months ago

Photo of a hand cradling a yellow, ribbed, fleshy fruit. Photo by Scott Zona CC BY-NC 2.0.

Photo of a dry, open fruit that hangs like a basket. The seeds have already dispersed. The heart-shape leaves of the vine are in the background. Photo by Scott Zona CC BY-NC 2.0.

Aristolochia fruits are a marvel. Some, like A. dictyophlebia, are berry-like (the former Pararistolochia), but many are wonderful baskets, like this A. ringens, from which the flat seeds sift into the wind. #Aristolochiaceae #TropicalBotany #dispersal #Botany 🌾🧪🌱

Scottish Lichens

@petravergunst.bsky.social

2 months ago

Riverwoods: dispersal corridors or refuges? Winter is often the time when I stay close to home and explore the burn that runs behind my garden. Ten or so years ago a fish ladder was installed just a few hundred yards downstream to allow salm…

#Riverwoods or #riparian woodland, should be see it as #dispersal corridors, #refugia or does it unique #habitat in its own right? Some reflections from the perspective of #lichens and #bryophytes.

#scottishlichens #scottishbryophytes #mosses #liverworts #lichens #biodiversity #nature #RiverDee

Animal Conservation

@animalconserv.bsky.social

3 months ago

Can Southeast Asia's #tigers break free? The connectivity, constraints, and recovery of the region's remaining #tiger populations - #OpenAccess zslpublications.onlinelibrary.wiley.com/doi/10.1111/... #dispersal #speciesrecovery @wileyecology.bsky.social

ISME - International Society for Microbial Ecology

@isme-microbes.bsky.social

3 months ago

Microbial movement into soils occurs at a surprisingly local scale. By measuring dispersal rates and spatial patterns, this study challenges the assumption that microbes freely mix across environments.
isme-microbes.org/close-to-hom...
#microbes #fungi #bacteria #dispersal #ecology

Diversity and Distributions

@consbiog.bsky.social

3 months ago

🌱 How far can plants really shift their future range under #climatechange? Using #SDMs for 1318 European species, this study shows that most #plants can’t track shifting climates.

⚠️ Authors suggest caution in assuming #dispersal capability in SDMs.

🔗 doi.org/10.1111/ddi....

Seppo

@sepponet.bsky.social

3 months ago

Through the #DNA analysis of old #air samples collected by the Swedish Armed Forces, researchers at @biologylu.bsky.social in Sweden can show that #spore #dispersal of northern mosses has shifted over the past 35 years. It now starts several weeks earlier.
#moss #bryophyte #climate #openaccess

CCTB

@cctb-wue.bsky.social

3 months ago

The effects of the dispersal ability in the diversification dynamics of Emberizoidea (Aves: Passeriformes) Abstract. Understanding how ecological and evolutionary forces shape biodiversity is a core pursuit in macroevolutionary research. Species’ dispersal abili

Work by our @axelarango.bsky.social is now out!!! @uni-wuerzburg.de Effects of the #dispersal ability in the #diversification dynamics of Emberizoidea (Aves: Passeriformes) url: academic.oup.com/evolut/artic...

Animal Conservation

@animalconserv.bsky.social

4 months ago

#Habitat quality and water availability affect #genetic connectivity of #platypus across an #urban landscape - #OpenAccess zslpublications.onlinelibrary.wiley.com/doi/10.1111/... #dispersal #monotremes #conservationgenetics @wileyecology.bsky.social

Lewis A. Jones (he/him)

@lewisajones.bsky.social

4 months ago

Just over one month left to apply for this PhD project! ⬇️

#corals #dispersal #fossils #macroecology #macroevolution #palaeontology #paleontology #palaeobiology #paleobiology #palaeoceanography #paleoceanography #palaeogeography #paleogeography

JE Editor Takeshi Takegaki

@je-editor-takegaki.bsky.social

4 months ago

新しい論文が出版されました!
"Cockroach social network position does not influence exploration tendency（ゴキブリの社会ネットワーク上の地位は探索傾向に影響を与えない）" by Vasilis Louca et al. rdcu.be/eM3BK
#Dispersal #Exploration #Invertebrate #Social_network_analysis

JE Editor Takeshi Takegaki

@je-editor-takegaki.bsky.social

4 months ago

New paper is out!
"Cockroach social network position does not influence exploration tendency" by Vasilis Louca et al. rdcu.be/eM3BK
#Blaptica #Cockroach #Dispersal #Exploration #Invertebrate #Social_network_analysis

Kenneth De Baets

@djbirddanerd.bsky.social

4 months ago

Fig. 1. Palaeo-location of the 27 regions of A) conodont and B) ammonoid taxa taxa defined in this study, respectively. Each region is associated to its number of sampled localities encircled by five arcs, each arc corresponding to a time interval (Changhsingian, Griesbachian, Dienerian, Smithian, or Spathian). A coloured arc means that the region includes at least one locality dated from this time interval; an unfilled arc means that the region does not include any locality dated from this time interval. See the section Material and methods for details about the calculation of the palaeocoordinates. Silhouettes of conodont and ammonoid are public-domain images from the Phylopic website (compare https://doi.org/10.18261/let.58.3.2).

Values of Dispersal-Niche Continuum Index (DNCI) show ammonoid biogeography was dispersal-constrained in Griensbachian and Spathian as opposed to niche constrained in the Smithian, while conodonts were more functionally (niche) constrained in Griesbachian as opposed to driven by both niche and dispersal constraints from the Dienerian to Spathian. Black dots and associated horizontal black lines represent mean value and ±2 standard error, respectively.

Biogeography after #Permian #Triassic boundary crisis resulted from a complex combination of functional and dispersal mechanisms doi.org/10.18261/let...

#Ammonoids limited by #dispersal in Griesbachian/Spathian, by niche in Smithian; #conodonts by #niche in Griesbachian, mixed in Dienerian–Spathian

RES Publications

@respublications.bsky.social

4 months ago

New #OpenAccess research in #RESEcolEnt

Distance of movement in three threatened #butterfly species
doi.org/10.1111/een.70027

#Euphydryas #Parnassius #Phengaris #CMR #Dispersal #Conservation
@sheborg.bsky.social @robwilsonmncn.bsky.social @callomac.bsky.social @wiley.com

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of a cluster of black palm fruits (drupes) hanging on red, dangling stalks.

A close-up photo of a bug climbing on a plant shoot. The bug is all black with red spots.

It blows my mind that red-&-black fruits and seeds are attractive, but red-&-black insects are repellent (aposematic). In dispersal, as in life, context is everything! 📷1: Ripe fruits of Pinanga malaiana (#Arecaceae). 📷2: red-spotted stink bug, Jose Amorin CCBYNCSA2. #dispersal #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of the foliage and fruits of noni. The fruits are multiple fruits and are white when ripe. Photo by Scott Zona CCBYNC2.

White fruits are relatively rare in plants. Birds don’t detect them very well because they have low chromatic contrast with background vegetation. Mammals can more easily detect white fruits if they are aromatic, like this stinky Morinda citrifolia #dispersal #Rubiaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of a pair of fleshy seeds of ginkgo hanging in the tree, not yet dispersed. Photo by Scott Zona CCBYNC2.

The fleshy sarcotesta of Ginkgo biloba smells really nasty. Some biologists suggest that the stench evolved to attract scavenging dinosaurs (or ancient mammals), which dispersed the seeds. 🤷‍♂️ Maybe. If so, that vile smell is the aroma of Jurassic death. 💀 #dispersal #Ginkgoaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of a hand holding a fruit cut in half. The fruit is brown and has a thick husk. The seeds are embedded in a gelatinous matrix surrounded by firm flesh.

Another part of mammal dispersal may be ethanol. It’s repellent at high concentration but attractive at low concentration. Mammals may zero in on the aroma for efficient foraging. Genipa americana (📷: Cody Hinchliff CCBYNCSA2) ripe fruits have ca. 0.5% ethanol. #dispersal #Rubiaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of fruits on a cutting board with a paring knife. Fruits are ovoid and greenish-yellow. One is cut in transverse section to show a creamy yellow interior and large seeds.

Mammals tend not to have color vision, so plants advertise with aromas. The fruits tend to be green, brown or white & require manual or buccal processing to remove a husk or large seeds. A good example: pawpaw, Asimina triloba (#Annonaceae). #dispersal #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of leafy shoots of blackberries. Some fruits are red and unripe. Others in the same cluster are black and ripe. Photo by Scott Zona CCBYNC2.

Stiles also hypothesized that a “preripening” fruit color is a signal that fruits will be ripe soon. Lots of fruits, like these Rubus sp., pass through a 2nd color as they ripen from green to their final color. The red color says, “Coming Soon.” #dispersal #Rubiaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of leafy shoots bearing blue berries. A leaf subtending a cluster of berries has turned bright coppery red.

In the 1980s, E. Stiles hypothesized that plants advertise fruit with a contrasting foliar “flag.” I’ve seen this phenomenon in cultivated Berberis, like this B. aquifolium (📷: Alicia CCBYNC4). Some experiments support the hypothesis; some don’t. 🤷‍♂️ #dispersal #Berberidaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of leafy branches bearing small, vivid, red berries. Photo by Scott Zona CCBYNC2.

Helping animals find fruits: Plants advertise to bird dispersers via colorful fruit. Red fruits stand out in the visible spectrum, like these Ilex vomitoria fruits, but they may also contrast with the foliage in the UV spectrum, which birds can also see. #dispersal #Aquifoliaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Sabal palmetto seeds in animal dung are ready to germinate. Photo by Scott Zona CCBYNC2.

Seed dispersal by animals swallowing the seeds is endozoochory. It’s fraught with difficulty. 1. Animals need to find the fruits. 2. Fruits should be taken only when ripe. 3. Taken only by the disperser (not by a seed predator). The results are worth the effort. #dispersal #Arecaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of a vine creeping in long, straight paths across a sandy, sparsely vegetated habitat. Photo by Scott Zona CCBYNC2.

Ipomoea (642 spp.) has a global distribution, especially in the tropics. Ipomoea pes-caprae is found on tropical beaches worldwide. Its seeds have air pockets under the thick, hard seed coat that allow them to float for months, possibly longer. #dispersal #Convolvulaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of a leafless branch bearing a single fruit of the tulip tree. The individual carpels have matured into woody, winged samaras. Photo by Scott Zona CCBYNC2.

While Magnolia relies on biotic seed dispersal, Liriodendron relies on the wind. Each carpel becomes a woody, winged fruit (except for the lowermost carpels, which form a basket to hold their winged sisters). This is L. tulipifera. #dispersal #Magnoliaceae #Botany 🌾🧪🌱

🌴 Scott Zona, Ph.D. 🌴

@scottzona.bsky.social

5 months ago

Photo of tree branches bearing magnolia fruits. The fruit (an aggregation of follicles) is pendulous and bright red. Photo by Scott Zona CCBYNC2.

Magnolia sieboldii has red, pendulous fruits, as shown in this cultivated plant. Does the fruit, rather than the seeds, attract the dispersers? Do the follicles open at maturity? Do the seeds have a contrasting color? I have so many questions. 🤷‍♂️ #dispersal #Magnoliaceae #Botany 🌾🧪🌱

Patrick Marques

@pmarques35.bsky.social

5 months ago

(a–c) Geographic maps showing the sample locations used in this study. Letters and colours indicate geographic regions or sample origins (including aquarium and introduced populations). Maps were generated using the ‘ggOceanMaps’ in R version 4.2.2. For detailed sample information, refer to Table S1. (d) Geographical frameworks applied in this study. Detailed explanations on the geographic frameworks and classification can be found in Document S1.

[8/8] L’étude démontre que la dispersion océanique, bien que rare, a profondément marqué la biodiversité insulaire asiatique. Elle a façonné l’histoire évolutive des Gyraulus et montre combien les barrières marines pèsent dans la formation des peuplements insulaires. #geography #islands #dispersal

Patrick Marques

@pmarques35.bsky.social

5 months ago

Results of divergence time estimation and ancestral region estimation on the maximum likelihood tree generated by IQ-TREE2 (Minh et al. 2020). Ancestral region estimation was performed under the Mk + TS + high_OD_prob model with time-stratification at 1.55 Ma. Letters and colours correspond to geographic regions for the samples. Coloured pie chart slices at each node represent the estimated ancestral region, with the central angle of the arc indicating the probability. Areas with a probability of less than 10% were omitted from each pie chart for visibility. Vertical bars on the right side of the tree denote thirteen geographic clades, and the distributions of these clades are shown on the map to the left.

[7/8] Les chercheurs soulignent que les oiseaux migrateurs sont sans doute les principaux vecteurs de ces dispersions, capables de transporter des escargots sur plusieurs milliers de kilomètres. Les courants marins apparaissent ici beaucoup moins déterminants. #geography #islands #dispersal