The Annual Rhythm of Cambial Activity in Two Woody Species of the Greek “Maquis”

Arianoutsou-Faraggitaki, M.; Psaras, George K.; Christodoulakis, Nikolaos S.

doi:10.1016/s0367-2530(17)31440-8

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…Water availability commonly limits photosynthesis and plant growth in Mediterranean-climate habitats (e.g., Arianoutsou-Faraggitaki et al 1984, Tenhunen et al 1985, whereas autumn-winter temperatures are known to affect population sizes of small birds wintering in temperate regions (Shields and Grubb 1974, Kricher 1975, Graber and Graber 1979, Spencer 1982, Brittingham and Temple 1988. The maximum number of variables that could be simultaneously included in these analyses was limited by the number of data points (N ϭ 12 yr); thus, I often had to rely on univariate analyses and a relatively reduced number of weather variables.…”

Section: Discussionmentioning

confidence: 99%

“…Water availability commonly limits photosynthesis and plant growth in Med-iterranean-climate habitats (e.g., Arianoutsou-Faraggitaki et al 1984, Tenhunen et al 1985. Water availability commonly limits photosynthesis and plant growth in Med-iterranean-climate habitats (e.g., Arianoutsou-Faraggitaki et al 1984, Tenhunen et al 1985.…”

Section: Variation In Fruit Abundancementioning

confidence: 99%

“…For most species studied here, observed annual variation in fruit abundance most likely reflects variations in both the resources available for, and the resources allocated to, fruit production. Water availability commonly limits photosynthesis and plant growth in Med-iterranean-climate habitats (e.g., Arianoutsou-Faraggitaki et al 1984, Tenhunen et al 1985. The significant overall effect of the amount of rainfall on total fruit abundance found here, and particularly the positive relationship between fruit abundance and rainfall in the preceding spring (when flowering and early fruit growth takes place; Herrera 1984a), supports a role of resource availability in determining year-to-year variation in fruit abundance at the plant community level.…”

Section: Variation In Fruit Abundancementioning

confidence: 99%

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Long-Term Dynamics of Mediterranean Frugivorous Birds and Fleshy Fruits: A 12-Year Study

Herrera¹

1998

Ecological Monographs

193

292

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The relationship between fleshy-fruited plants and their vertebrate seed dispersal agents often has been depicted as subject to important interannual variation, but no study has thus far documented such variation on a long-term basis. This paper presents the results of a 12-yr investigation on fleshy-fruited plants and avian frugivores in a Mediterranean montane locality of southeastern Spain. The main objective was to document patterns and correlates of long-term variation in the composition and abundance of fruits and birds, with particular reference to seed dispersers. During October-December (''autumn'' period) 1978, abundance of ripe fruits and birds was assessed in a 4-ha plot in dense, well-preserved sclerophyllous scrub, by means of counts in permanent plots and mist-netting, respectively. Diet composition and fruit preference patterns of Erithacus rubecula and Sylvia atricapilla, the two most abundant seed dispersers, were also investigated over the same period, using fecal sample analyses. Possible consequences to the birds of annual variation in fruit supply and diet composition were investigated using data on fat deposition levels and recapture rates of mist-netted individuals.Total fruit abundance (i.e., mean ripe fruit density of all species combined) fluctuated among years between 5.4 Ϯ 11.1 fruits/m 2 (mean Ϯ 1 SD; 1986) and 77.1 Ϯ 78.0 fruits/m 2 (1989) and was positively related to the amount of rainfall in the preceding spring. Not all fruiting species bore ripe fruits every year, and among those species that did, fruit density fluctuated asynchronously and to variable degrees. Seven out of 13 species exhibited significant supra-annual periodicity in fruit abundance, with fluctuation periods ranging from 2 to 6 yr. Variation in the abundance of each of the six most abundant fruit species was unrelated to annual variation in rainfall. The autumn bird assemblage at the study site was made up of year-round resident species (54.1% of captures, all years combined) that were largely fruit predators (feeding on pulp or seeds without performing dispersal) and of autumn-winter resident species (45.5% of captures) that were largely seed dispersers. Bird abundance, all species combined, ranged between 27.1 and 61.5 captures/100 net-hours for 1987 and 1986, respectively. Depending on year, seed dispersers made up 25.6-75.4% of the total captures, and fruit predators made up 20.9-69.7%. The relative importance of nonfrugivores was always negligible (1.1-9.9%). No correlation existed across years between total fruit abundance and the capture rates of all bird species combined, seed dispersers, or fruit predators. Annual variation in the abundance of seed dispersers was positively related to November mean maximum temperature. At the individual species level, S. atricapilla capture rates were correlated with the abundance of the fruits of Phillyrea latifolia, a species exhibiting extreme annual fluctuations.Annual variation in the importance of fruits in the diet of S. atricapilla and E. rubecula was not signi...

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Section: Discussionmentioning

confidence: 99%

Section: Variation In Fruit Abundancementioning

confidence: 99%

Section: Variation In Fruit Abundancementioning

confidence: 99%

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Long-Term Dynamics of Mediterranean Frugivorous Birds and Fleshy Fruits: A 12-Year Study

Herrera¹

1998

Ecological Monographs

193

292

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“…The extended summer water deficit developing in the Miocene, about the time of origin for some of these taxa, would provide a strong influence on how well fleshy fruit persist and whether there might be selection for reduction in succulence (Dimitri et al 2017). Arbutus unedo L. from the Mediterranean Basin, for example, requires rainfall to break the summer drought relatively early to be able to stimulate further fruit development and production in the fall (Arianoutsou-Faraggitaki et al 1984;Chiarucci et al 1993). As flowering has shifted earlier to winter and early spring in the genera with dry fruit, fruit maturation has similarly shifted from fall to spring and summer (Beck and Vander Wall 2010;Wang et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Reproductive phenological shifts and other phylogenetic trait changes in the Arbutoideae (Ericaceae) in the context of drought, seed predation, and fire

Parker

Stickrod

2022

Botany

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Phenology is an ecologically critical attribute that commonly is coordinated with other plant traits. Phenological shifts may be the result of evolutionary adjustments to persistently new conditions, or transitory, varying with annual flux in abiotic conditions. In summer-dry, fire-prone Mediterranean-climates, for example, many plant lineages have historically migrated from forests to more arid shrublands resulting in adaptive trait changes. These shifts in habitat abiotic conditions and biotic interactions influence morphology of flowers and fruits and will interact with phenological timing. The Arbutoideae (Ericaceae) is one lineage that illustrates such modifications, with fruit characters evolving among genera from fleshy to dry fruit, thin to stony endocarps, and bird to rodent dispersal, among other changes. We scored herbarium collections and used ancestral trait analysis to determine phenological shifts among the five Arbutoid genera found in semi-arid climates. Our objective was to determine if phenology shifts with the phylogenetic transition to different reproductive characters. Our results indicate that phenological shifts began with some traits, like the development of a stony endocarp or dry fruits, but not with all significant trait changes. We conclude that early phenological shifts correlating with some reproductive traits were permissive for the transition to other later character changes.

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“…Cherubini et al (2003) hanno verificato, utilizzando un metodo dendrocronologi co, che il corbezzolo è caratterizzato da una elevata sensitività nei confronti delle precipitazioni proba bilmente a causa del suo apparato radicale più su perficiale se comparato a quello di altre specie tipi che della vegetazione mediterranea (per es., Quercus sp.p. e Fraxinus ornus - Arianoutsou-Faraggitaki et al 1984). La crescita del corbezzolo è fortemente in fluenzata dalle precipitazioni primaverili dell'anno (Lillis & Fontanella 1992) e ciò sembra confermato dagli elevati tassi traspirativi, prossimi a quelli po tenziali, misurati in condizioni idriche favorevoli (SWC > 10%).…”

Section: Discussioneunclassified

Changes in rainfall patterns in Mediterranean ecosystems: the MIND project

Alberti¹,

Inglima²,

Arriga³

et al. 2007

Forest@

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Abstract:Changes in rainfall patterns in Mediterranean ecosystems: the MIND project. Will Mediterranean terre strial ecosystems be affected by the expected changes in precipitation regimes? If so, by how much and in which direction? These questions are at the basis of the research performed in context of the EU MIND pro ject, whose key objectives were: i) to investigate the potential effects of increasing drought on Mediterranean terrestrial ecosystems at the process, ecosystem and regional scales and ii) to assess ecosystem vulnerability to changes in rainfall patterns. A network of experimental study sites has been created in Portugal, Spain, France and Italy, where field manipulations alter the amount of water available to the ecosystem. The most up-to-date methods of ecophysiology, micrometeorology, soil ecology and remote sensing have been used to elucidate the mechanisms that regulate the response of vegetation and soil to changes in water availability. This information is providing the basis for the implementation and validation of simulation models capable of predicting the drought response of Mediterranean terrestrial ecosystems, and their vulnerability to future climate change, on a larger scale. The out-coming results are elucidating how water availability affects plant ecophysiological processes, the dynamics of soil carbon and the overall exchange of mass and energy bet ween the land and the atmosphere. This paper focuses on some of the important, yet preliminary, results on C and energy fluxes that have been obtained at the large scale troughfall manipulation experiment (Tolfa, Italy), in a forest dominated by Arbutus unedo L.

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The Annual Rhythm of Cambial Activity in Two Woody Species of the Greek “Maquis”

Cited by 11 publications

References 3 publications

Long-Term Dynamics of Mediterranean Frugivorous Birds and Fleshy Fruits: A 12-Year Study

Long-Term Dynamics of Mediterranean Frugivorous Birds and Fleshy Fruits: A 12-Year Study

Reproductive phenological shifts and other phylogenetic trait changes in the Arbutoideae (Ericaceae) in the context of drought, seed predation, and fire

Changes in rainfall patterns in Mediterranean ecosystems: the MIND project

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