Blog personal d'Alfons Delgado Garcia. Ornitologia i zoologia en general, botànica, literatura de Natura, viatges i altres temàtiques naturalistes.
dimarts, 30 de setembre del 2008
Observacions herpetològiques 30-09-08
Totes estaven a la sèquia plena de mauremys, 37 des de l'observatori elevat fins al camp dels cavalls, de totes les mides. Cap trachemys.
Observador: Xavier Romera
Fan un curs d'eines per a la preservació, la gestió i el desenvolupament d'espais agraris
Aquest curs té per objectiu donar a conèixer els principis teòrics i pràctics en l'àmbit de la preservació i gestió dels espais agraris. El curs analitzarà les principals normatives existents actualment en l' àmbit de la planificació i gestió dels espais agraris i s'aprofundirà en les conseqüències que se'n poden derivar de la seva aplicació. Alhora s'estudiaran casos concrets, de manera que s'oferiran eines útils per a la gestió de perímetres agraris específics.
El curs s'adreça a estudiants de segon i tercer cicle d'ensenyaments universitaris dedicats a temes territorials i agraris: arquitectura, ciències ambientals, enginyeria agrícola, geografia, paisatgisme, etc. Per als estudiants de la Universitat de Girona aquest curs té el reconeixement de 0,5 crèdits de lliure elecció.
També està adreçat a tècnics i tècniques d'institucions públiques (ajuntaments, diputacions, consells comarcals, etc.) i d'organismes privats; investigadors i investigadores especialitzats en ordenació del territori, urbanisme, agricultura, etc.; gestors territorials; i a la pagesia i professionals del món agrari.
Font de la informació
Fundació Agroterritori
diumenge, 28 de setembre del 2008
Observacions ornitològiques 26-09-08
Bubulcus ibis 4exs
Anas clypeata 3exs
Anas crecca 3exs
Phaisanus colchicus 1 mascle
Actitis hypoleucos 2exs
Gallinago gallinago 1ex
chlidonias hybridus 1ex
Corvus corone 10exs
Observador: Freddy Rivas Risueño
dissabte, 27 de setembre del 2008
World's common birds 'declining'
Once a familiar sight and sound, the nightingale is becoming less common (Image: Gareth Peacock)
The populations of the world's common birds are declining as a result of continued habitat loss, a global assessment has warned. The survey by BirdLife International found that 45% of Europe's common birds had seen numbers fall, as had more than 80% of Australia's wading species. The study's authors said governments were failing to fund their promises to halt biodiversity loss by 2010. The findings will be presented at the group's World Conference in Argentina. The State of the World's Birds 2008 report, the first update since 2004, found that common species - ones considered to be familiar in people's everyday lives - were declining in all parts of the world. In Europe, an analysis of 124 species over a 26-year period revealed that 56 species had declined in 20 countries. Farmland birds were worst affected, with the number of European turtle-doves (Streptopelia turtur) falling by 79%. In Africa, birds of prey were experiencing "widespread decline" outside of protected areas. While in Asia, 62% of the continent's migratory water bird species were "declining or already extinct". Biodiversity barometers "For decades, people have been focusing their efforts on threatened birds," explained lead editor Ali Stattersfield, BirdLife International's head of science.
Ali Stattersfield,BirdLife International
"But alongside this, we have been working to try to get a better understanding of what is going on in the countryside as a whole." By consolidating data from various surveys, the team of researchers were able to identify trends affecting species around the world. "It tells us that environmental degradation is having a huge impact - not just for birds, but for biodiversity as well," she told BBC News. While well-known reasons, such as land-use changes and the intensive farming, were causes, Ms Stattersfield said that it was difficult to point the finger of blame at just one activity. "The reasons are very complex," she explained. "For example, there have been reported declines of migratory species - particularly those on long-distance migrations between Europe and Africa. "It is not just about understanding what is happening at breeding grounds, but also what is happening at the birds' wintering sites." She said the findings highlighted the need to tackle conservation in a number of different ways. "It is not enough to be looking at individual species or individual sites; we need to be looking at some of the policies and practices that affect our wider landscapes."
The global assessment also showed that rare birds were also continuing to be at risk. One-in-eight of the world's birds - 1,226 species - was listed as being Threatened. Of these, 190 faced an imminent risk of extinction. The white-rumped vulture, a once common sight in India, has seen its population crash by 99.9% in recent years. An anti-inflammatory drug for cattle, called diclofenac, has been blamed for poisoning the birds, which eat the carcasses of the dead livestock. "That has been a really shocking story," Ms Stattersfield said.
The world is failing in its 2010 pledge to achieve a significant reduction in the current rate of loss of biodiversity
Dr Mike Rand,BirdLife International's CEO
"Four years ago, we were not even sure what was responsible for the dramatic declines. It happened so suddenly, people were not prepared for it. "Since then, the basis for the decline is well understood and measures are being taken to remove diclofenac from veterinary use in India. "However, it is still available for sale and there still needs to be a lot more work to communicate the problem at a local level. "But it demonstrates that we can get to the bottom of the reasons behind declines." The plight of albatrosses becoming entangled in long-line fishing tackle has also been the subject of sustained campaigning, attracting high-profile supporters such as Prince Charles and yachtswoman Dame Ellen MacArthur. About 100,000 of the slow-breeding birds are estimated to drown each year as a result of being caught on the lines' fish hooks.
But fisheries in a growing number of regions are now introducing measures to minimise the risk to albatrosses. Ms Stattersfield said these examples showed that concerted effort could investigate and identify what was adversely affecting bird populations. But she quickly added that prevention was always better than finding a cure. "We don't want to have to react to problems that come about from bad practice. "What we are trying to do with this report is to be as clear as possible about what are the underlying causes, and then present a range of conservation measures that can preserve birds and biodiversity." BirdLife International will use the report, which is being published at its week-long World Conference in Buenos Aires and on the group's website, to call for governments to make more funds available for global conservation. "Effective biodiversity conservation is easily affordable, requiring relatively trivial sums at the scale of the global economy," said Dr Mike Rands, BirdLife's chief executive. He estimated that safeguarding 90% of Africa's biodiversity would cost less than US $1bn (£500m) a year. "The world is failing in its 2010 pledge to achieve a significant reduction in the current rate of loss of biodiversity," he warned. "The challenge is to harness international biodiversity commitments and that concrete actions are taken now."
divendres, 26 de setembre del 2008
Observacions naturalistes 25-09-08
- + de 12 cabussets
- 3 corbs marins grossos passen volat sobre l'estany i van direcció sud.
- 1 martinet de nit (foto)
- 1 fumarell carablanc jove.
- molts blauets
- 1 Rascló
- 1 arpella femella.
- 1 esparver.
- 3 cigonyes. Passen volat alt.
- 1 corriol petit.
- 1 batallaire jove.
- 1 mosquiter de passa.
- boscarla de canyar.
Papallones com Lampides boeticus, Inachis io i Apatura
ilia i d'altres.
Observador: Antoni Mariné
dijous, 25 de setembre del 2008
Observacions naturalistes del 25-09-08
- fumarell carablanc 1. L'últim d'un grup de 5 (4 carrablancs i un
negre) que vàren arribar fa més de 10 dies.
- fredelugues 3, passen volant sobre l'estany.
- 1 becadell.
- 1 gamba verda
- 1 corriol (segurament petit)
- 1 xivita
- 1 cotxa blava, femella i adulta (amb el pitet blau i la bigotera blanca)
- orenetes de ribera
- alguns xarxets
- una parella d'esparvers
- 1 xoriguer gros
- força boscarles de canyar
- i molts altres dels habituals com bernats, martinets, collverds,
rasclons,... i un faisà comú.
Pel que fa a invertebrats moltes erugues de la bonica papallona
Inachis io alimentant-se d'ortiga i diferents tipus de vespes:
- de la sorra: tipus ammophila sabulosa
- vespes portasserra.
Observador: Antoni Mariné
dimarts, 23 de setembre del 2008
Campanetes de tardor
Falcó de la reina (Falco eleonorae)
Key words: Falco eleonorae, 4 birds at Cassà de la Selva, Girona
Observadors: Alfons Delgado-Garcia, Maite Garrigós
dilluns, 22 de setembre del 2008
Observacions ornitològiques 31-08-08
Mínim 10 Martinet blanc
1 Martinet Ros
5 cabussets
Mínim 10 Bernats Pescaires
Més de 100 ànecs coll-verd
1 arpella (fotografia)
Polles d'aigua, bastantes eren joves
3 corriols petits
Mínim 6 Xivites
3 xivitones
Tudó
Tortora turca
2 blauets
Oreneta vulgar
Merla
1 mallerenga carbonera
1 Oriol
1 gaig
Garses
2 cornelles
Estornell vulgar
Pardal comú
Pardal xarrec
diumenge, 21 de setembre del 2008
Tortuga de rierol (Mauremys caspica) relocalitzada a la Tordera
dissabte, 20 de setembre del 2008
Infraccions durant la mitja veda
Menjadora per a passeriformes
divendres, 19 de setembre del 2008
Video dels Estanys
Els Estanys de Sils from Albert Blanch on Vimeo.
Moltes gràcies, Albert.
divendres, 12 de setembre del 2008
Bosqueta icterina (Hippolais icterina) a la Tordera
(Fogars de la Selva) a la Tordera, Héctor Andino, Joan Grajera,
l'Alfons Alier i l'Andreu de Carretero, van capturar una bosqueta
icterina. Es tractava d'un individu edat 3 EURING .
A banda d'això, van capturar també un esparver femella, tres blauets,
un bec de corall senegalès i alguns mosquiters de passa, tallarol gros
i boscarla de canyar.
dimarts, 9 de setembre del 2008
El mosquit tigre arriba a la demarcació de Girona
Pas de rapinyaires a Caldes de Malavella
de l'urbanització Llac del Cigne (Caldes de Malavella), l'N-II a la
tarda, i per sobre del casc urbà al migdia.
3 àguila marcenca
mínim 11 milà negre
mínim 8 xoriguers comuns
mínim 10 aligots comuns
3 aligots vespers
1 esparver vulgar
Observador: Xavier Romera
dilluns, 8 de setembre del 2008
Observacions ornitològiques 24-08-08
diumenge, 7 de setembre del 2008
Més pas de tardor
Observador: Alfons Delgado-Garcia
Observacions ornitològiques 03-09-08
dissabte, 6 de setembre del 2008
Custòdia del territori: acords a Sils
Acesa aportarà finançament per a la gestió de l'Estany de Sils
Podeu llegir la notícia completa aquí.
Pas de migrants a la plana
04-09-08, al mateix lloc, 1 falcó camaroig, una marcenca i abellarols
04-09-08, a Sant Andreu Salou, a l'alçada de Can Maiol, un gaig blau
Observador: Toni Mariné
31-08-08, 1 astor mascle adult, al Mas Viader, Cassà.
01-09-08, 1 milà negre, veïnat de serinyà, Cassà.
02-09-08, 1 esparver femella, a Serinyà, ha tornat com cada final d´estiu.
04-09-08, 4 guatlleres a la Selvatana, Cassà. És una dada molt
interessant, ja que aquests darrers tres diumenges la zona ha estat
caçada intensament, amb captures d'entre 20 i 30 guatlleres en 3
jornades.
Observador: Rafel Mariné
dijous, 4 de setembre del 2008
La primera observació de becadell (Gallinago gallinago) d'enguany
Viatge naturalista a Extremadura i Andalusia (part 3 i final, suposo): Doñana i una nit a la Sierra de Andújar
Doñana No hi ha futur sense Doñana. No es coneix la llum fins que no coneixes Doñana. No he conegut cap espai natural més fascinant natura...
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CLASSE MAMMALIA ORDRE INSECTIVORA Família Soricidae Musaranya cua-quadrada ( Sorex araneus ) Espècie de requeriments eurosiberians. La seva ...
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És el bruel ( Regulus ignicapilla ). Aquesta diminuta joia alada que guarneix les branques dels arbres és l'ocell més diminut del cont...
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Doñana No hi ha futur sense Doñana. No es coneix la llum fins que no coneixes Doñana. No he conegut cap espai natural més fascinant natura...