extremos geográficos de la distribución natural de austrocedrus chilensis (cupressaceae) geographic extremes of the natural range of austrocedrus chilensis (cupressaceae)
الحدود الجغرافية القصوى لنطاق التوزيع الطبيعي لشجرة *Austrocedrus chilensis* (الفصيلة السروية Cupressaceae)
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Abstract
The "Patagonian Cypress" ( Austrocedrus chilensis (D.Don) Pic. Ser. et Bizzarri) is the most economically important native conifer of the temperate forests of Argentina. Some inaccuracy was detected in the bibliography with respect to its latitudinal range, what motivates the present study. The location of the latitudinal extremes was determined based on bibliographic antecedents, local settlers' and experts' information, and field surveys. The northernmost extreme is located at 32º 39' S (Region V of Valparaíso, Chile), while the southernmost extreme at 43º 44' S (Chubut Province, Argentina). This 11 latitudinal grades range represents a distance of 1230 km. This broad latitudinal range and the fragmentary feature of its natural distribution area support the hypothesis of ecotypes for this species.
يُعد "سرو باتاغونيا" ( Austrocedrus chilensis (D.Don) Pic. Ser. et Bizzarri) أكثر المخروطيات المحلية أهمية من الناحية الاقتصادية في الغابات المعتدلة في الأرجنتين. وقد كُشف عن عدم دقة في الأدبيات العلمية فيما يخص نطاقه العرضي، وهو ما استدعى إجراء الدراسة الحالية. تم تحديد موقع الطرفين العرضيين استناداً إلى السوابق الببليوغرافية، والمعلومات المستقاة من السكان المحليين والخبراء، والمسوحات الميدانية. يقع الطرف الشمالي الأقصى عند 32º 39' جنوباً (الإقليم الخامس فالبارايسو، تشيلي)، بينما يقع الطرف الجنوبي الأقصى عند 43º 44' جنوباً (مقاطعة تشوبوت، الأرجنتين). ويمثل نطاق الدرجات العرضية الإحدى عشرة هذا مسافة قدرها 1230 كم. إن هذا النطاق العرضي الواسع والسمة المجزأة لمنطقة انتشاره الطبيعي يدعمان فرضية وجود أنماط بيئية تابعة لهذا النوع.
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pastorino2006boletnextremos
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| Authors | ;Mario J. Pastorino;Matías M. Fariña;Donaldo Bran;Leonardo A. Gallo |
| Journal | revista colombiana de biotecnología |
| Year | 2006 |
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