Aproximación biogeográfica a los bosques de la zona mediterránea de Chile: caracterización e inventario

Pérez, Victor G. Quintanilla; Aguirre, José Antonio Cadiñanos; Zaballos, Itxaro Latasa; Valencia, Pedro José Lozano

doi:10.21138/bage.1500

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…Nevertheless, according to this author in this case the true S.polygamus would be restricted in distribution to Chile. Andescecidiumparrai and O.saizi galls were found on populations of S.polygamus on the central area, also known as the Mediterranean portion of the country (Quintanilla et al 2012), which extends from 32°45’N to 37°30’S, abridging the V, VI, VII, VIII and Metropolitan (RM) regions (Figure 15). The main characteristics of this area are the presence of two mountainous ranges, the Andes on the east and the Coastal Range on the west, as well as the central valley located in between them.…”

Section: Resultsmentioning

confidence: 99%

“…Plants bearing galls of both cecidosid species were found mainly in the Coastal Range (Figs 8A, 14A). The climate in these valleys is typically austral Mediterranean; the vegetation is autochthonous, composed of sclerophyllous forests, palm communities and coniferous forests and steppe at higher altitudes (Quintanilla et al 2012, Valencia et al 2015). …”

Section: Resultsmentioning

confidence: 99%

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Overlooked gall-inducing moths revisited, with the description of Andescecidium parrai gen. et sp. n. and Oliera saizi sp. n. from Chile (Lepidoptera, Cecidosidae)

Silva¹,

Moreira²,

Vargas³

et al. 2018

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There are still many gall systems associated with larvae of Lepidoptera in which the true gall-inducers have not been identified to species. Reports on misidentification of gall inducers have been recurrent for these galls, particularly in complex gall-systems that may include inquilines, kleptoparasites, and cecidophages, among other feeding guilds such as predators and parasitoid wasps. Here we describe and illustrate the adults, larvae, pupae and galls, based on light and scanning microscopy, of Andescecidiumparraigen. et sp. n. and Olierasaizisp. n., two sympatric cecidosid moths that are associated with Schinuspolygamus (Cav.) Cabrera (Anacardiaceae) in central Chile. Adults, immatures, and galls of the former did not conform to any known cecidosid genus. Galls of A.parrai are external, spherical, and conspicuous, being known for more than one century. However, their induction has been mistakenly associated with either unidentified Coleoptera (original description) or Olieraargentinana Brèthes (recently), a distinct cecidosid species with distribution restricted to the eastern Andes. Galls of O.saizi had been undetected, as they are inconspicuous. They occur under the bark within swollen stems, and may occur on the same plant, adjacent to those of A.parrai. We also propose a time-calibrated phylogeny using sequences from mitochondrial and nuclear loci, including specimens of the new proposed taxa. Thus in addition to clarifying the taxonomy of the Chilean cecidosid species we also tested their monophyly in comparison to congeneric species and putative specimens of all genera of Neotropical and African cecidosids.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Overlooked gall-inducing moths revisited, with the description of Andescecidium parrai gen. et sp. n. and Oliera saizi sp. n. from Chile (Lepidoptera, Cecidosidae)

Silva¹,

Moreira²,

Vargas³

et al. 2018

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“…This public protected area is located in the mountain range of La Campana-El Roble, in the Valparaíso region (central Chile). The study area is encompassed in the Central Chile biodiversity hotspot (Myers et al, 2000), characterized by a Mediterranean climate type, with rainy winters reaching around 480 mm annually and a prolonged dry period with only 120 mm of rain (Quintanilla et al, 2012). The average annual temperature is ∼ 18 • C (Pliscoff, 2009).…”

Section: Study Areamentioning

confidence: 99%

Multiple Anthropogenic Pressures Lead to Seed Dispersal Collapse of the Southernmost Palm Jubaea chilensis

2021

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Seed dispersal is a critical process for plant reproduction and regeneration. Successful recruitment depends on pre- and post-dispersal processes that complete a seed’s journey until becoming a new plant. However, anthropogenic stressors may disrupt the seed dispersal process at some stages, collapsing plant regeneration and hampering its long-term persistence. The Chilean palm tree Jubaea chilensis is the southernmost and the only non-tropical palm species, which currently relies on the scatter-hoarding rodent Octodon degus for seed dispersal. We assessed seed fate by measuring predation and dispersal rates through experimental fieldwork in the Palmar de Ocoa site (located within La Campana National Park) and the Palmar El Salto. We also used previous reports on seed harvest and seedling herbivory to depict the whole J. chilensis seed dispersal process and assess the relative importance of different anthropogenic pressures. We asked the following questions: (1) What is the effect of human harvesting on J. chilensis recruitment? (2) Do native and exotic rodents predate J. chilensis seeds in the same way? and (3) Does post-dispersal herbivory matter? We found that J. chilensis fruits are harvested for human consumption, reducing pre-dispersal available seeds by removing about 23 tons per season. Then, post-dispersal seeds at the Ocoa palm grove are heavily predated by exotic (Rattus rattus) and native (Octodon spp.) rodents; only 8.7% of the seeds are effectively dispersed by Octodon degus. At Palmar El Salto, 100% of the seeds were predated by Rattus rattus, precluding further analysis. Finally, 70% of the seedlings were consumed by exotic herbivores (mainly rabbits), resulting in a success rate of 1.81%. Only 7.9% of the surviving seedlings become infantile plants (4 year-old). Our assessment suggests that J. chilensis has aging populations with very few young individuals in disturbed sites to replace the old ones. For those reasons, we suggest increasing its conservation category to critically endangered as land-use change is rapidly fragmenting and shrinking the extant J. chilensis populations. We urge to take urgent actions to protect this relict palm, which otherwise may go extinct in the next decades.

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“…Gaur egun arte, aipaturiko metodoa Ertamerikan, Hego Amerikan eta Europan aplikatua da eta bere emaitzak hainbat lanetan argitaratu dira (ikerlanak, liburuak, komunikazioak, ponentziak eta artikulu zientifikoak). Horretaz gain, ebaluazio hauek eremu babestu eta ez babestuetan egin izan dira, beti ere, lurraldea antolatzeko helburuarekin (Cadiñanos & Meaza, 1998a;Cadiñanos & Meaza, 1998b;Cadiñanos & Meaza, 2000;Cadiñanos et al, 2002a;Cadiñanos et al, 2002b;Meaza et al, 2006;Lozano et al, 2007;Lozano & Cadiñanos, 2009;Cadiñanos et al, 2011;Quintanilla et al, 2012;Lozano et al, 2013;Sagastibeltza et al, 2014;Lozano et al, 2015).…”

Section: Sarreraunclassified

Oñatiko baso-landaredi paisaien inbentariazioa, karakterizazioa eta balorazio biogeografikoa

Urzelai¹,

Valencia²

2020

Lurralde

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Jarraian aurkezten den ikerlanak, Oñatiko baso natural eta zuhaitz landaketek osatzen dituzten paisaien inbentarioa, karakterizazioa eta balorazio biogeografikoa egitea du helburu, udalerrian kontserbazio lehentasuna duten baso eta landaketak identifikatuaz. Horretarako, LANBIOEVA (Landscape Biogeographical Evaluation) metodologia Oñatiko baso natural eta zuhaitz landaketa ezberdinei aplikatu zaie. Lan hau hutsetik hasi beharrean, 25 urte baino gehiagoko ikerketa ildo sendo baten barruan kokatzen da. Europa nahiz Amerikako lurralde ezberdinetan aplikatua izan da metodologia hau eta bere emaitzak hainbat ikerlanetan argitaratua izateaz gain, liburu, artikulu zientifiko, komunikazio eta ponentzia anitzetan ere zabaldu dira. Oñatin, haritz kandudun (Quercus robur) eta haritz kandugabeen (Quercus petraea) basoak izan dira kontserbazio lehentasun handiena eskuratu dituzten eremuak, izan ere, interes natural oso altua izateaz gain, eremu mehatxatuetan aurkitzen dira.

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Aproximación biogeográfica a los bosques de la zona mediterránea de Chile: caracterización e inventario

Abstract: Texto resumen.

Cited by 5 publications

References 1 publication

Overlooked gall-inducing moths revisited, with the description of Andescecidium parrai gen. et sp. n. and Oliera saizi sp. n. from Chile (Lepidoptera, Cecidosidae)

Overlooked gall-inducing moths revisited, with the description of Andescecidium parrai gen. et sp. n. and Oliera saizi sp. n. from Chile (Lepidoptera, Cecidosidae)

Multiple Anthropogenic Pressures Lead to Seed Dispersal Collapse of the Southernmost Palm Jubaea chilensis

Oñatiko baso-landaredi paisaien inbentariazioa, karakterizazioa eta balorazio biogeografikoa

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