Отложения гумуса

Термин «эпифит» имеет греческое происхождение и означает «растение, растущее на растении». Действительно, эпифитные виды образуют настоящий ковер на стволах и ветвях деревьев. Эпифиты вырастают из семян, распространяемых ветром или животными; их корни цепко держатся за неровности коры. Однако это не паразиты: их «хозяева», растения-форофиты, обеспечивают им всего лишь благоприятное положение в хорошо освещенном древесном пологе. Питание эпифиты получают из застрявших в коре почвенных частиц и гумуса, а также утилизуют растворенные в дождевой воде минеральные соли. Отложения гумуса возникают в результате разрушения органического материала (например, отмирающих листьев самих эпифитов или других растений), который накапливается среди корней эпифитов.

Вода непосредственно поступает к эпифитам только во время дождя в отличие от других растений, которые имеют постоянный доступ к почвенной влаге. Поэтому у многих эпифитов развились приспособления для улавливания и запасания дождевой воды. Некоторые вилы, например орхидные и эпифитные кактусы, имеют суккулентные стебли и листья с губчатыми тканями, удерживающими воду, а также восковой покров, уменьшающий потери влаги путем испарения. У многих орхидных основания стеблей клубневидные; представители других семейств запасают воду в «цистернах», образованных в местах соединения стебля с расширенными листовыми черешками. У некоторых видов вода запасается в губчатой массе корней. Виды семейства бромелневых могут собирать до нескольких галлонов воды в цистернообразных основаниях листьев, так что получаются своего рода «висячие болота», привлекающие многие виды животных — земляных червей, пауков, мокриц, скорпионов, древесных лягушек и насекомоядных птиц.

В тех условиях, которые существуют в лесу Финка-ла-Сельвы, густота покрова эпифитов может быть весьма значительной. Годовая норма осадков здесь превышает 300 см, влажность воздуха редко опускается ниже 80%, а сухой сезон выражен нерезко. На испещренной бороздами коре лецитиса, на котором находилась наша платформа, эпифиты закрепляются очень легко, а трещины в ней задерживают дождевую воду, делая ее доступной для их корней. На этом благоприятном для эпифитов субстрате мы с М. Грейэмом из Массачусетского университета в Амхерсте определили около 50 видов растений, из корней и стеблей которых образовались своего рода коврики толщиной до 25 см.



  1. 611466 246225Great post will be linking this on some web sites of mine keep up the excellent work. 601252

  2. I simply want to tell you that I am new to blogs and honestly liked this website. More than likely I’m planning to bookmark your site . You surely come with fabulous posts. With thanks for sharing with us your web-site.

  3. There are a lot of ways I could look at your post that might give me an option as to how to respond. It excites me to know that your post was exactly about the topic that I have been researching for my Doctoral Thesis. I am curious to know if you have any more information that I might find relevant for my thesis?

  4. There is some interesting information in your post. Thank you.

  5. Pretty nice post. I just stumbled upon your blog and wanted to say that I have really enjoyed browsing your blog posts. After all I will be subscribing to your rss feed and I hope you write again soon!

  6. Hello there! This is kind of off topic but I need some advice from an established blog. Is it hard to set up your own blog? I’m not very techincal but I can figure things out pretty fast. I’m thinking about making my own but I’m not sure where to start. Do you have any points or suggestions? Thanks

  7. Nice blog here! Also your website loads up fast! What host are you using? Can I get your affiliate link to your host? I wish my site loaded up as fast as yours lol

  8. Very good site you have here but I was wanting to know if you knew of any forums that cover the same topics talked about in this article? I’d really like to be a part of community where I can get suggestions from other knowledgeable people that share the same interest. If you have any suggestions, please let me know. Bless you!

  9. I loved as much as you will receive carried out right here. The sketch is tasteful, your authored material stylish. nonetheless, you command get got an edginess over that you wish be delivering the following. unwell unquestionably come more formerly again since exactly the same nearly very often inside case you shield this hike.

  10. You actually make it seem so easy with your presentation but I find this topic to be actually something that I think I would never understand. It seems too complicated and very broad for me. I’m looking forward for your next post, I will try to get the hang of it!

  11. I enjoy the efforts you have put in this, regards for all the great posts.

  12. Hello there! I know this is somewhat off topic but I was wondering which blog platform are you using for this website? I’m getting sick and tired of WordPress because I’ve had problems with hackers and I’m looking at options for another platform. I would be great if you could point me in the direction of a good platform.

  13. Thanks for helping out, good information.

  14. I like what you guys are up also. Such smart work and reporting! Keep up the excellent works guys I¡¦ve incorporated you guys to my blogroll. I think it’ll improve the value of my site :)

  15. «Criminal Minds» star, Shemar Moore is reaching out to his fans all over again. On May 31 Moore posted a photo of himself on his Facebook page inviting his fans to join him for a live video chat.Well, joining a dating site will be the direction many people take, because it gives people the right way to «feel someone out» prior to actually meeting associated with them. Well, dating sites have their problems also. Many people hide behind old pictures and candy coated labels. Well since the advancement of video, people can actually see who they’re together with with a youtube video profile.As incredibly carrier to file for a 4g network in the us (it’s different kind as Sprint launched back in spring), T-Mobile was the exclusive carrier for the Google branded G2. This had the first 4g capable phone regarding carrier, and the only one available put together by the google itself. Now, however, there is a couple more options.Newbie The Normal takes the stage on March 6th at 7 p.m. Ryan Murphy, who co-created the show and was honored at or even a February 27th Paley event, will be on-hand, as will co-creator and EP Ali Adler, EP Dante Di Loreto, and series stars Andrew Rannells, Justin Bartha, Ellen Barkin, Georgia King, Bebe Wood, NeNe Leakes, and Jayson Blase. Livestream will start at 7:30 p.m., along with the panel is actually going to moderated by series guest star John Stamos.Even someone that is beginner to web cams can try these chat sessions. Chatters at sites come from diverse backgrounds and fall into different ethnicities. There are some sites that allow web cam sessions for adults across the age of 18. You others possess teen chat or adult only chat or even kids’ converse. Depending on the site you enjoy the ability to chat, the chatting rules will utilize.Anastasia-International may be the industry leader with over 36,000,000 unique yearly users (this number is constantly rising). Approximately 1000 dating agencies quite a few major cities of the first USSR work with them.We have super exciting news to have you TA’ers! The Twilight-inspired group, Mitch Hansen Band, will be joining us on May 27th the exclusive video chat career! Not only is he / she going to grant us a live free sex interview, they also will additionally be performing several lives songs for american!I’m glad that you watched the GDI (Global Domains International) automated, personalized, business production! Yup, I automatically get notified when prospects do. LOL.When you seek internet dating from on-line web site source, follow the guidelines about which connected with things for you to share websites about yourself while at the site. These sites have such guidelines rrn your safety.So you’ve now learned some useful tips about video chat! Go for it and look for a website that fits you best, because clean-cut logic states that the best site have the best experience.

  16. I like this post, enjoyed this one thanks for posting. «The universe is not hostile, nor yet is it unfriendly. It is simply indifferent.» by John Andrew Holmes.

  17. Merely wanna comment on few general things, The website layout is perfect, the articles is very good. «Drop the question what tomorrow may bring, and count as profit every day that fate allows you.» by Horace.

  18. What i don’t understood is actually how you are now not really a lot more smartly-appreciated than you may be now. You’re very intelligent. You recognize therefore considerably in terms of this matter, made me in my opinion consider it from numerous various angles. Its like men and women don’t seem to be fascinated unless it is one thing to do with Woman gaga! Your personal stuffs nice. Always take care of it up!

  19. I truly appreciate this post. I have been looking everywhere for this! Thank goodness I found it on Bing. You have made my day! Thanks again!

Оставить коментарий